Oajen 2" 50mm soft wheel chair caster wheel for hardwood floor, pack of 5, 7/16" x 7/8" or 11mm x 22mm grip ring stem 2" soft polyurethane caster with 7/16" x 7/8" grip ring stem to fit most chairs. Soft wheel will not scratch hardwood floor. Stem and axle are lubricated to provide years of service. 5 casters / pack. Exceeds BIFMA quality. Made in Taiwan.