Klein Tools 21051B Replacement...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$69.50
$14.77
Klein Tools 21051B Replacement Blades for Large Cable Strippers

Klein Tools 21051B Replacement Blades for Large Cable Strippers

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Model: 21051B
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In Stock (leaves warehouse same day if ordered before 3pm ET)

$69.50
$14.77
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Replacement Blades for Large Cable Strippers

  • Warnings

    • Always wear approved eye protection.
    • NOT insulated. Plastic-dipped or slip-on plastic handles are NOT intended for protection against electrical shock.

  • Features

    • Includes blades and screws
    • Precision ground blades ensure long life
    • Effectively removes insulation on MTW, THHN and THWN-2 cable
    • Cable sizes range from 250 MCM - 2/0 and 350 - 750 MCM
    • Works with CME Wire and Cable, Inc., Encore Wire Corporation, United Copper Industries and Southwire Company, LLC cable manufacturers
    • Quicker, safer and more precise than a knife
    • For use with Klein's large cable strippers (Cat. Nos. 21050 and 21051 purchased before October 2020)


21051B - spec sheet

Manufacturer Resources

Spec Sheet

Product Specs

Item Depth:
1.0000 in
Item Height:
1.0000 in
Item Weight:
0.1000 lbs
Item Width:
1.0000 in
Overall Height:
0.172" (0.4 cm)
Overall Length:
4" (10.2 cm)
Overall Width:
2" (5.1 cm)
Department:
Electrical
Product Group:
Power Tools & Accessories
Product Subgroup:
Tool Replacement Parts
Product Type:
Replacement Blade
Product Details:
Replacement Blades
Product Material:
Powder Metal
Product Weight:
0.02 oz (0.45 g)
Product Height:
1 in
Product Depth:
1 in
Product Width:
1 in

Klein Tools 21051B – Frequently Asked Questions

1) Will the Klein 21051B blades fit my cable stripper, and which catalog numbers do they work with?
The 21051B replacement blade set fits Klein's large cable strippers, Cat. Nos. 21050 and 21051, and for the 21051 only units purchased before October 2020. If your stripper was bought after that date, these are not the correct blades for it.
2) What cable sizes can I strip with the Klein 21051B blades?
They cut insulation on cable from 250 MCM to 2/0 and 350 to 750 MCM. If the conductors on your job fall outside those ranges, this blade set is the wrong tool.
3) Will these blades work on THHN and MTW building wire, or only on specific brands of cable?
The blades are ground to remove insulation on MTW, THHN and THWN-2 cable, and Klein lists them as working with cable from CME Wire and Cable, Encore Wire, United Copper Industries and Southwire.
4) Can I use a Klein large cable stripper with these blades on energized conductors?
No. The tool these blades go into is not insulated. Plastic-dipped or slip-on plastic handles are not protection against electrical shock, so de-energize before stripping, and wear approved eye protection while cutting.
5) Does the Klein 21051B blade kit include mounting screws, or do I need to reuse the old ones?
Screws come in the kit along with the blades, so you are not reusing worn fasteners when you swap the cutting edges.
6) Why replace the blades instead of just using a knife on large feeder cable?
Stripping 250 MCM to 750 MCM insulation with a knife risks nicking the conductor and takes longer. Running fresh blades in a Klein large cable stripper is quicker, safer and more precise than a knife, which is why electricians and MRO crews keep a spare 21051B set on hand rather than letting dull blades push them back to a utility knife.
7) What is the exact manufacturer part number for the Klein large cable stripper replacement blades?
Klein Tools part number 21051B. One kit covers the blade-and-screw set for the large cable strippers, so order by that number when restocking consumables for a crew.
8) What are the Klein 21051B replacement blades made of, and how long do they last?
The blades are powder metal, precision ground for long service life. They are a wear part: once the edge dulls or chips, swapping in a fresh set restores a clean strip instead of tearing insulation.
9) How big is the Klein 21051B blade pack, and is it small enough to keep in a pouch?
Overall it measures 4 in (10.2 cm) by 2 in (5.1 cm) by 0.172 in (0.4 cm) and weighs about 0.1 lbs as shipped, so a spare set rides easily in a tool pouch or van bin.
How fast can I get the Klein Tools 21051B delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Klein Tools 21051B come with a warranty?
Absolutely. The Klein Tools 21051B is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Klein Tools 21051B?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
Why buy the Klein Tools 21051B from ZenSupply?
ZenSupply makes it easy to get the commercial door hardware you need—fast shipping, expert support, and rewards on every order. Our team is always ready to help you choose the right product for your project.
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