Suitable for most office chairs as well as gaming chairs, desk chairs, swivel chairs, executive chairs and office chairs. With standard shaft size (shaft diameter: 7/17", shaft length: 7/8"), they are compatible with many brands of chairs such as Aeron, Dxracer, Hon, Boss The hard floor casters are made of high quality steel and absolutely durable. When you slide the hard floor casters on your office chair, you will completely hear no noise. Even if you work or play in home office at night, no one will be disturbed by it anymore, because no one can hear it. With the soft and heavy duty polyurethane edge, hard floor casters will not cause any scratch, crack or other damage to your floor. They also won’t leave a mark on any surface. Perfect for expensive hardwood tile, parquet, granite, stone, concrete and vinyl floor.

Stem Size: 11 mm x 22 mm(Diameter x Length)
Total Height: 90 mm/3.54 in (your chair will up about 3 inch height after installation)
Wheel Diameter: 75 mm/ 2.95 in
Total Weight: 1.25 kg/ 2.75 lbs.
Capacity: 440 lbs. max load weight
Main Material: Polyurethane, Steel