Color: Black Donâ€t worry about the hair or petâ€s hair getting caught in the wheel and clogging. When there is no one on your chair, the chair can slide very well for easy movement; when you sit on the chair, the chair will not slide and is very firm. FAVOMOTO 5pcs Stopper Office Chair Swivel Caster Wheels Padded Office Replacement Wheels for Office Chair Office Chair Without Wheels Rugs for Office Floor Mat to Rotate Ring The Bell Donâ€t worry about the hair or petâ€s hair getting caught in the wheel and clogging. When there is no one on your chair, the chair can slide very well for easy movement; when you sit on the chair, the chair will not slide and is very firm. The surface of the wheels is smooth, so there is no need to worry about leaving scratches on the floor or damaging the carpet. Size: 6.5 x 4.5 x 4.5cm including 5 bell glides.