Feature: Using High-strength steel wire rope materials, with Good Durability, Providing Smooth Operation. Cable diameter of 0.2inch/5mm includes the black nylon coating ,Maximum weight capacity is 300 LBS, which is Resistant to Wear and Reduces Friction, is a good choice for recovery training The rubber ball is used on cable assemblies to stop the cable and attachment bar as cable is retracted when lowering the weight stack of selectorized strength equipment. Such a super strong steel cable lets you fix or replace your broken gym cables right! Suitable for doing lat pull-downs, triceps pushdowns, biceps curls, crunches, face pulls and much more with the pulley system.