Bullet Points: 1Complete Sizes: A set of five pieces, with about 2.5-inch and about 3-inch diameter casters for you to choose, the about 2.5-inch installation height is about 82mm/3.23in, and the about 3-inch installation height is about 95mm/3.74in, which can meet your various needs. 2Strong Bearing Capacity: Our casters are made of industrial grade steel, precision ball bearings and durable polyurethane wheels, with super bearing capacity! Never worry about breaking the casters due to being too heavy! 3Durable Caster Wheels: Strengthened riveting technology makes the flat roof stronger and installation firm. Both the frame shell and the wave plate adopt the one-time forming technology, which is low abrasion, labor saving, quieter and long service life. 4360 Degree Rotation: 360 Degree omnidirectional universal wheel design, using our wheels allows your chair to slide quietly, without affecting others, and not damaging the floor. 5Wide Application: Customers who use this kind of caster say that this kind of wheel is better than their original wheels. The caster rod has a diameter of about 11mm/0.43in and can be installed on office chairs, computer chairs and other chairs. Features: 1. Using M6 metric screws and matching locknuts, the wheel rotation effect is better, and the tightness can be adjusted by yourself. 2. When there is foreign matter entangled the wheel, it can be disassembled and assembled by yourself. The operation is simple, and the service life of the caster is improved. 3. The wheels are made of new PU technology to ensure abrasion resistance, quietness and flexibility. Specification: Name: Transparent Casters Wheel material: PU Installation method: inserted link Type: universal wheel Size: about 2.5 inches, about 3 inches Bearing capacity (when all four wheels are installed): about 2.5-inch load-bearing about 120kg, about 3-inch load-bearing about 150kg Uses: swivel chairs and furniture are widely used Packing List: Caster Wheel*5