High quality materialThe rope caster is made of high quality metal iron, sturdy and durable, smooth, rust-proof, wear-resistant, corrosion-resistant, thickened wheel cores can increase the load-bearing capacity, it can be used without problems indoors or outdoors. 360 degree pulleyYou will receive 4 fitness idler pulleys, outer diameter is 73mm, inner diameter is 10mm, load bearing is 215kg, 360 degree rotating ring on the top, this which can prevent cords, cables, wires from tangling; you can use it with confidence. Silent Traction SystemThe rope roller of the cable machine is very smooth, it can reduce wheel friction and make the rotation of the pulley more flexible and no noise; if it works normally, you can barely hear the sound, so you don't have to worry about complaints from neighbors at midnight. Strong Loading CapacityThe flexible steel rope roll has a strong load capacity with a maximum load capacity of 215 kg, suitable for most common ropes. The pulley can easily satisfy your daily use and make you more fun. Widely Used: This pulley can be used for home fitness equipment, fitness accessories, lifting blocks, lifting equipment, ladder lifts and pulling equipment; or use ropes for indoor and outdoor applications, garages, machine loaders, curtains, clotheslines, bottle pulling systems, etc.