The HK-11 features a hidden handcuff key on the inside of the belt keeper. Available in Plain, Basketweave, and Hi-Gloss with Chrome or Brass Snaps. Fits 2.25" (58mm) belt widths.
Zak Tool #17 Concealable Belt Keeper Handcuff Key
The Miami times.
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5492K 1” Belt Keeper w/ Hidden Cuff Key - Cal Uniforms
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Belt Keeper Key Holder
Slotted Handcuff Key
Hi Tec, Belt Keeper with Hidden Handcuff Key