Feature:1. Nylon bearing pulley is made of high quality nylon, durable, wear resistant, waterproof, long service life.2. No friction spark, high safety performance, ensure easy movement.3. Nylon pulley is lightweight and easy to install at altitude.4. It is an accessory to fitness equipment and can be used for fitness equipment and garage door pulley systems.5. Suitable for health club, family fitness, business or private use, necessary fitness equipment accessories, easy to change.Specification:Condition: 100% Brand NewItem Type: Nylon PulleyMaterial: NylonColor: As Pictures Shown Product Outer Diameter: Approx. 50mm/2in, Bore Inside Diameter: Approx. 8mm/0.3in, Bearing Thickness: Approx. 20mm/0.8in, Groove Depth: Approx. 10mm/0.4in, Groove Width: Approx. 10mm/0.4inWeight: Approx. 510g/18oz.Package List:10 x 50mm Pulley