Name: Medium round head ring Knuckle Duster Specifications: Width (bottom of the hand): 90mm (finger width): 97mm Height (fist arc to bottom): 62mm (finger hole size): 26*20mm Thickness (fist): 11mm Weight: about 113 grams Material: zinc alloy Craftsmanship: gold and silver are electroplated; black is sprayed Function: martial arts defense and life-saving, simple function, no special training is required to master. Outdoor car self-defense, home standby first aid, easy to carry and does not take up space. It is a very good product

Knuckle Duster

Specifications: Height: 67mm Length from head to tail: 140mm (fist) length: 67mm Thickness: 13mm head thickness Finger hole diameter 26*22mm Weight: about 130 grams Material: zinc alloy