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One Squeeze. Clean Copper. Every Time.

Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

If you've ever squinted at tiny gauge holes in a dark crawlspace and sheared off half the copper strands, this.

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  • Self-adjusting jaws strip 10-24 AWG with no gauge
  • Zero cut strands on fine stranded wire
  • Strip, cut, and crimp in one tool
  • Hardened HRC 52-56 steel head with no jaw
Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper
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30-Day Home Trialtry it risk-free at home
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24-Hour Supportfast, helpful customer care

Built for the Wires That Beat Other Strippers

Slick THHN, fine silicone, flat Romex. One tool, no setting changes.

Self-Adjusting 10-24 AWG Jaws

Insert anything from 10 AWG primary wire to a 22 AWG sensor lead and squeeze. The jaws size themselves, so you never hunt for a gauge hole.

Strip, Cut & Crimp in One

A shear cutter and crimping teeth sit inside the handle. Strip the lead, trim it, and crimp the terminal without picking up a second tool.

Locking Red Length Stop

Set it once from 6 to 18 mm and every strip comes out the same length. Pivot it flush when you need a longer section.

Low-Effort Compound Lever

The compound linkage does the pulling, so one easy squeeze strips the wire. Kind to tired hands and arthritic wrists.

How the StripMaster Pro Works

Grip and Set the Length

Grip and Set the Length

Slide the wire into the matte-black steel jaws until it touches the red stop slider. The serrated grippers clamp it at the right pressure for its gauge.

Score and Slide in One Squeeze

Score and Slide in One Squeeze

Squeeze the handle once. The stripping blades score only the insulation, and the compound jaws pull the jacket off in about half a second with every strand intact.

Cut and Crimp in the Handle

Cut and Crimp in the Handle

Move down to the inner handle. Trim the lead with the shear cutter, then lock an insulated or bare terminal in the crimping teeth below the pivot rivet.

Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper hero
Excellent4.8 (247)Trustpilot

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Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

Self-adjusting 10-24 AWG stripper, cutter, and crimper in one hardened-steel tool

Backed by our 30-Day Money-Back Trial & Full Cosari Guarantee.

$29.99 $59.99 Free Tracked Shipping (5–7 Days) Included

In Stock: Delivers in 5–7 Business Days. Free insured US delivery with tracking.

30-Day Money-Back Guarantee plus a full 2-Year Warranty.

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Description

What it does: Strips 10-24 AWG solid and stranded wire in one squeeze with self-adjusting jaws, cuts copper with a built-in shear, and crimps 10-22 AWG insulated and non-insulated terminals plus 7-8 mm ignition terminals.

Who it's for: Homeowners swapping switches and fixtures, garage mechanics, trailer, boat, and RV owners, car audio installers, and smart-home DIYers who want clean strips without hunting for gauge holes.

Build: 3.5 mm matte-black Cr-V/SK5 steel head hardened to HRC 52-56, heavy silver rivets, a red locking length stop, and bright red handles with white gauge markings and ribbed black rubber grips.

5–7 Day Shipping & 30-Day Returns

Free 5–7 Day US Shipping: Every order ships free with full tracking and delivers in 5 to 7 business days.

30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.

2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.

Why Choose the Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper?

Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper Detail

Every Strand Stays Intact

In our 500-strip test on 22 AWG 30-strand silicone wire, every sampled end kept all of its strands. No haircut, no weak leads.

Hardened Steel, Not Pot Metal

The HRC 52-56 steel head and silver rivets showed no measurable jaw wobble after 500 cycles. Cheap cast clones loosen within a week.

Shucks Romex Jacket

Feed flat 14/2 or 12/2 NM-B cable through the open jaws and one squeeze pops the outer jacket off without nicking the conductors inside.

Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper vs. Ordinary Alternatives

Cosari StripMaster Pro 3-in-1 Automatic Wire StripperStandard Competitors

FeatureCosari StripMaster Pro 3-in-1 Automatic Wire StripperStandard Competitors
Gauge selectionAutomatic, 10-24 AWGFind and match a tiny notch every time
Fine stranded wireAll strands stay intactOften trims strands
Repeatable strip lengthLocking 6-18 mm stopEyeball it
Crimping terminalsBuilt into the handleSeparate tool needed
One-handed ladder useOne squeezeTwo hands to pull
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What's Included

In the Box
  • 1 × Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper
  • 1 × Quick-start AWG and terminal crimping reference card
  • 1 × Kraft-and-black retail storage box
Technical Specifications
  • Strip range: 10-24 AWG (0.2-6.0 mm²) solid and stranded
  • Crimp range: 10-22 AWG insulated and non-insulated terminals, 7-8 mm ignition terminals
  • Length stop: 6-18 mm (approx. 1/4 to 3/4 in), pivots flush
  • Head: 3.5 mm Cr-V/SK5 steel, matte-black finish
  • Jaw hardness: HRC 52-56
  • Overall length: 205 mm (8.0 in)
  • Weight: 320 g (11.3 oz)
  • Warranty: 30-day money-back guarantee, 2-year workshop replacement
Care & Safety
  • Wipe the jaws and crimping teeth with a dry cloth after use to clear insulation dust and copper fragments. Put a drop of light machine oil on the pivot rivets every few months to keep the action smooth.
  • Store it dry in your toolbox or tote. Don't use the cutter on hardened steel wire or screws, and never use the tool on live circuits, since it is not insulated.
  • Backed by our 30-Day Money-Back Guarantee & Full Cosari Warranty
  • Customer Support: support@buycosari.com
In the Box Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

Clean Strips in 3 Steps

Swipe left for steps 2 and 3

  1. Set & Insert
    1

    Set & Insert

    Slide the red stop to your strip length and place the wire in the open steel jaws until it touches the stop.

  2. Squeeze Once
    2

    Squeeze Once

    Squeeze the handle. The jaws grip, score, and slide the insulation off in about half a second.

  3. Crimp & Finish
    3

    Crimp & Finish

    Drop a terminal into the crimping teeth inside the handle and squeeze once for a tight, tug-proof connection.

Verified Customer Reviews

What 200+ Verified Buyers Say About the Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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4.8
Based on 247 verified reviews
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97% of buyers recommend the Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper
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Mark H.Verified Buyer · 3 days ago

Every single strip comes out factory-identical for Wago lever nuts

Nothing used to make me see red faster than trying to strip a 2-inch stub of 14-gauge inside a crowded 3-gang box with manual notch pliers and snapping the copper off. With the Cosari, I set the red stop slider to 11mm, insert the wire, squeeze once—clack-shuck—done. Stripped three circuits on my garage subpanel this weekend without nicking a single strand.

Verified Purchase · Columbus, OH · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Travis K.Verified Buyer · 5 days ago

Rewired my utility trailer harness in 20 minutes flat

The cheap $13 self-adjusting strippers have sloppy side-to-side play in the rivets and shear off half the strands on 18 AWG trailer wire. This one tracks dead straight and grabs on the first squeeze. I also tested the handle crimper on blue heat-shrink butt connectors and yanked hard on every joint—zero slip. Best tool riding in my truck.

Verified Purchase · Boise, ID · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Danny R.Verified Buyer · 1 week ago

Actually bites slick 12 AWG THHN without skating

My old automatic pair used to skate right across nylon-coated THHN unless I squeezed the handles with both hands. The matte black steel jaws on the StripMaster Pro have real biting teeth that grab slick insulation immediately. Went straight from 12 AWG solid conduit pulls to 18 AWG ballast leads without touching the tension wheel.

Verified Purchase · Phoenix, AZ · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Greg S.Verified Buyer · 1 week ago

Shucks 12/2 Romex jacket and inner conductors back-to-back

Stripping outer NM-B sheathing cleanly without slicing into the black or white insulation inside is usually a chore with a utility knife. You just slide flat 12/2 or 14/2 Romex into these jaws, squeeze, and the outer jacket pops right off—then strip the individual conductors a second later with the exact same tool.

Verified Purchase · charlotte, NC · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Arthur M.Verified Buyer · 2 weeks ago

Saved my arthritic wrists on a boat dash rewire

At 66, twisting and yanking traditional hole-strippers fifty times in an afternoon leaves my hands cramping all night. The wide ribbed rubber grips on the Cosari take zero wrist twist and minimal grip force. Did all the 14-gauge tinned marine wire and 16-gauge bilge pump leads under my console pain-free.

Verified Purchase · Sarasota, FL · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Kevin P.Verified Buyer · 2 weeks ago

Strips both leads of 16/2 speaker wire in one squeeze

I didn't expect it to strip both conductors of flat 16/2 oxygen-free speaker wire simultaneously without cutting into a single hair of fine copper, but it nailed all 14 ceiling speaker drops in half the time. Having the cutter built right below the pivot meant I only carried one tool up the 8-foot ladder.

Verified Purchase · Tacoma, WA · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Brian L.Verified Buyer · 3 weeks ago

10-gauge solar wire down to 22-gauge sensor leads

Used it to wire an off-grid MPPT charge controller in my shop. It went from heavy 10 AWG stranded PV jumper cable down to tiny 22 AWG temperature sensor wires with just a quick quarter-turn on the micro-adjustment thumb wheel. Clean cuts, tight crimps, solid steel weight.

Verified Purchase · Fort Worth, TX · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Nate W.Verified Buyer · 3 weeks ago

Heavy-duty build, way tighter tolerances than big-box brands

It is slightly heavier than compact stamped-metal strippers, so you notice it in a shirt pocket, right at home in a tool pouch though. That extra steel pays off in zero jaw flex and rock-solid crimps on insulated spade terminals. Worth every penny at half off.

Verified Purchase · Grand Rapids, MI · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Chris D.Verified Buyer · 1 month ago

Thumb wheel handles tiny 24 AWG LED strip wires

Under-cabinet 24-gauge RGBW wires are notorious for snapping right off in standard strippers. Dialed the tension knob back slightly on the Cosari and stripped 32 tiny solderless connector leads without losing a single wire. Total game changer for low-voltage work.

Verified Purchase · Reno, NV · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

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Samir V.Verified Buyer · 1 month ago

Replaced three tools in my electrical tote

Tested the handle crimper on 15 marine butt splices and tried pulling them apart in my bench vise—the copper wire snapped before the crimp budged. Between the clean cutter, reliable crimper, and dead-consistent length stop, my old manual strippers are officially retired.

Verified Purchase · Naperville, IL · Cosari StripMaster Pro 3-in-1 Automatic Wire Stripper

Stop Cutting Strands. Start Stripping Clean Today.

$29.99 $59.99 Free Tracked Shipping (5–7 Days) Included

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Frequently Asked Questions

Does it strip both solid and fine-stranded wire without cutting strands?

Yes. In our 500-strip test it stripped 12 AWG solid THHN with no ring marks and 22 AWG 30-strand silicone wire with every strand intact on the ends we inspected under a 10x loupe.

Can it strip the outer jacket of flat Romex cable?

Yes. The open jaws accept flat 14/2 and 12/2 NM-B cable, and one squeeze removes the outer jacket without nicking the inner conductors' insulation.

What wire gauges does it handle?

It strips 10 to 24 AWG (0.2-6.0 mm²) solid and stranded wire, and crimps 10-22 AWG insulated and non-insulated terminals plus 7-8 mm ignition terminals.

Can I move the red length stop out of the way?

Yes. It adjusts from 6 to 18 mm (about 1/4 to 3/4 inch) and pivots flush when you need to strip a longer section or the middle of a run.

Can I use it on live wires?

No. It is not an insulated or VDE-rated tool. Always switch off the breaker and verify the circuit is dead before working.

What if the jaws slip or the spring fails?

You have 30 days to return it for a full refund if it doesn't perform. After that, it's covered by a 2-year Truemark workshop replacement warranty against spring or jaw failure.

Cosari StripMaster Pro 3-in-1 Automatic Wire StripperIn Stock · 30-Day Trial
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