Please note: the version with rope does not have the bottle opening function
Material: zinc alloy
Size: 123mm * 57mm * 9.5mm
Finger hole: irregular shape, the largest places are: 28mm, 28mm, 26mm, 22mm respectively
Weight: about 117g
This is a multi-functional knuckle that can not only break windows in self-defense, but also open bottle caps.