Forum: Custodial
Moderator: Chris Gower | A forum for all things custodial including Prison & cell locks, Handcuffs, Leg Irons and other restraints
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I have noticed a trend in my small collection of KIK (Key In Knob) cylinders. About half are 5/8" (.625") in diameter plus or minus a few thousandths, the other half are 16 mm (.630") in diameter...
Key In Knob (KIK)...