Made of rubber, with polishing surface, the cups will not be scratched or damaged of the wooden or tile, protecting the floor. Professional production line to ensure the cups can be in the same perfectcondition after using them for a long time, durable , stable, sturdy to use. Features - Color: Black. - Size: 5.00X5.00X1.40cm/1.97X1.97X0.55 inch. - Material: Rubber. - cups have polishing surface to the ground so that the floor will not be scratched or damaged regardless of wooden or tile, and floor holding will be excellent. - Made of quality rubber that has very good vibration absorbing abilities, prevent any skidding of your furniture. - Locks furniture wheels in place, cup design that cradles roller and bed caster wheels, prevent the scratches. - Protective ring bottom protects floors from indentation or damage while holding furniture in place. - Use on tables, cedar chests, chairs, curio cabinets, desks and much more. Package list: 4 x caster cups