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Lock Picking and Lock Bumping News — top

Applying Tension in the Top of the Keyway

Posted by Chris Dangerfield on

Applying Tension in the Top of the Keyway

  Hello all Every day I'll get at least one email asking: "What does TOK and BOK mean?" Do you know? If not, you're about to become a better lock picker. TOK stands for "Top of Keyway", and BOK, for "Bottom of Keyway", and when it comes to lock picking, TOK and BOK are referring to a type of tension tool used in those different parts of the keyway. Now we all know about applying tension from the bottom of the keyway, that's what most wrenches are designed for. But for top of keyway you need a different type of...

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