Feature: The screw is detachable, therefore it can use for multiple times. It can be used to tighten between wire rope, chain and other wire ropes. With magnetic work. It is suitable for tightening the taut rope and adjusting the elastic effect. Made of 304 stainless steel, durable, high quality and waterproof. Material: 304 Stainless Steel Free Travel Distance: 42mmMore detailed size, please see picture. Weight: 35g/1pcQuantity: 4pcs Note:No retail package. Transition: 1cm=10mm=0.39 inchPlease allow 0-3cm error due to manual measurement. Pls make sure you don't mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package Included:4 pcs. x M4 hooks.