Circle-Stainless Steel Knuckle Duster Four Finger Foldable Finger

Name:Circle
Material: Stainless steel
Inner diameter: 23mm
Outer diameter: 33mm
Total thickness: 26mm
Weight: about 88g

Function: martial arts equipment is self-defense and life-saving, outdoor self-defense and standby defense. It can be mastered almost without special practice. It is a very practical product.