Adjustable Length: The pulley cable is easy to install.We use 2pcs steel safety buckles to the safety.And can support up to 660 LB. Specification: This wire rope diameter 0.24inch/6mm including the black PU coating. It is more strong than 5mm. Made of high-strength PU materal + steel wire.The steel wire is consists of 7 shares,19 peices per share, Anti-dropping and Anti-Collision Design: The ball prevent the cable shakes.The metal sheets prevent the rubber stopper ball to hit the pulley during use it. This exercise will help you achieve results: muscle, burst fat, strengthen core capabilities and flexibility to achieve the best state. he gym pulley is perfect for all kinds of strength . Pay attention to the growth of the back, shoulders and torso in all strength enhancements. Material: Stainless steel+PU+rubber colour: black Package Contents: 1 x tension rope 1 set x installation tools Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.