Parameters.Product size: length of umbrella cord approx. 25cm, diameter of ball approx. 3.5cmProduct colour: BlackProduct material:Umbrella rope + steel ball.1. High quality stainless steel buckle, steel ball and military standard seven core umbrella rope woven together, fashionable and beautiful, good wear resistance2. As a decoration, beautiful and generous, but in critical moments can be used as self-defense gear, easy to carry3. Used for first aid, survival, weaving, winding and other purposes, single rope tension up to 280 kg, far beyond the strength of the general rope4. Made according to 550 standard, imported equipment winding, the whole round and tight, the surface texture is detailedPackage:2*defence ball