This is an upgraded pulley made of solid nylon. More robust. Universal bearing pulley is suitable for fitness equipment, fitness equipment, weight training machine, garage door pulley system, cable machine and other spare parts. Light weight, wear resistance, long service life. Silent pulley, no friction spark, high performance, easy installation. Outer diameter: 90mm; bore inner diameter: 10mm, bearing thickness: 25mm, suitable for ropes up to 7 mm in diameter. Colour: black Material: nylon + metal Package Contents: 2 * Pulleys Only the above package content, other products are not included. Note: Light reflection 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.