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Kukko K-55-B Mechanical nut splitter set (3/8" TO 1 3/8")

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Return Policy

Hassle-Free Return Policy

Return Window: Enjoy a stress-free return process within 30 days of your purchase.

To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.

Refund Process: Quick and easy! We initiate your refund as soon as we receive the returned item, ensuring a swift turnaround to your original payment method.

Exchange Option: If you prefer an exchange instead of a refund, we're happy to oblige. Let us know your preference, and we’ll arrange it.

Customer Support: Our dedicated customer service team is here to assist with any aspect of your return process.

We aim to make your return experience as smooth and effortless as possible!

Includes 3 Single-Edged Nut Splitters: 55-1, 55-2 & 55-3 and replacement chisels for each.  Also includes Kukko 97-1 Thread file for repair of internal and external threads.


  • For splitting nuts size 3/8" to 1 3/8" (10-36 mm).
  • Very sharp cutting through facet cut.
  • KUKKO chisel finished with TiN coating to increase hardness.
  • Includes 3 nut splitters, replacement chisels for each and thread file


  • Splitting nuts can be done without damaging the threaded bolt.
  • Wear and corrosion protection thanks to TiN coating.

Nut flat range: 3/8" to 1 3/8" (10mm to 36mm)

M Nut Sizes: 6-24

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