A Set of 8 Pcs Single Shower Door Rollers (4 upper rollers and 4 bottom rollers).
Diameter of the wheel: 23MM
Width of the wheel: 6mm. Minimum Hole size in the glass: 11mm. Maximum glass thickness: 6mm.
Material: Plastic, Nylon, A Plastic, Nylon BS and stainless steel.
Comes with screw cover caps. Spring loaded action can also fit curved showers. Designed with a nut and a plastic cover