Features: new and high quality The pulley has lower coefficient of friction, lower vibrations and lower noise. Our waterproof bearing pulley is good for fitness equipment and garage door roller disc system. The pulley is made of quality and wear-resistant PA material; and it can be used for many years. It is a universal pulley for most fitness equipment, great for replacement roller of fitness equipment. Service: If you are not satisfied with our product or have any questions, please to contact our. Specifications: Material: PA Color: As The Picture Shows Specifications Options: 50/60/70/90/100/110/120/160 (More Size Detail, Please See Photo.) Package Includes: 1Pc Bearing Pulley note: Please allow 1-2cm error due to manual measurement. Please make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thanks!