The 90mm universal bearing pulley wheel is for fitness equipment, garage door pulley system, sliding door pulley, cable machine and other spare parts. External diameter of the weight pulley: 90mm; Inner hole diameter: 10mm. Thickness: 25mm. Groove depth: 10mm; Groove width: 10mm. Suitable for ropes with a diameter up to 7 mm. The inside of the cable pulley is made of solid steel, the other is made of durable nylon which allows the universal wheel to load maximum 500kg. The 90mm Nylon Pulley is lightweight, wear resistant and has a long service life. Silent pulley, no friction sparks, good safety performance and easy installation. Nylon Wheel is gradually replacing the old metal pulley with its unique superiority, has been widely used in the equipment of lifting as tower crane accessories.