Name: Summoner brass knuckle

material: zinc alloy

weight: about 130g

specification: height (boxing arc surface to bottom of Palm):74mm width (boxing surface):123mm thickness (boxing surface):4.5mm

rope wrapping part thickness: 15mm
finger hole size:(26mm)

function: it is suitable for martial arts self-defense and life-saving. It is a tool that can be mastered without special practice. The product is wrapped with a piece of parachute cord, which can be removed for standby first aid in case of emergency. It is a very good product.