Brass Knuckles Tactical Survival Multi-Functional Self Defense Knuckle

Description:
100% new high quality.
Effectively protect your safety in an emergency
Let you face the enemy and keep you calm
Color: black,sliver ,gold(as the picture shows)
Material: Alloy
Function: Boxing, Exercise
Size: 12.2*6.5cm thickness:6mm diameter2.5cm
Packing list: 1 /2* Knuckle (others not included)