Lock-In-Tool Features:

• Hardened steel tool available for professional engine builders, lightweight plastic tool available for the do-it-yourself engine builder.
• Install spiral wrist pin locks & wire wrist pin locks easier than ever before! Locks can be installed in a matter of seconds!
• To determine which tool needed for your particular application simply measure the wrist pin being used. A small block Chevrolet with a .927 diameter wrist would use the corresponding .927 tool. It's that easy!

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Lock-In-Tool — A Tool To Make An Unpleasant Job Easier
Spiral wrist pin locks and wire wrist pin locks are notorious for difficult installation. The Lock-In-Tool makes installing spiral wrist pin locks and wire wrist pin locks a breeze! What used to take hours of frustration, can now take only seconds with the Lock-In-Tool. Not only does the Lock-In-Tool ease installation, it also avoids piston damage, broken and bent locks, and injury to your fingers and fingertips.

To learn more about how to use the Lock-In-Tool and it's ease of use, you can visit our "/how-to-use.htmlhow to use" page, where we have step by step instructions and a video demonstration of the Lock-In-Tool in action.

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The Lock-In-Tool makes installing spiral pin locks &
​wire pin locks as easy as 1-2-3!

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