4 PCS Shower Door Rollers and 1PCS Dual Purpose Telescopic Screwdriver?Roller Diameter 19-23-25-27mm for The Bathroom Pan Glass Sliding Door Pulleys-Runners-WheelsStainless steel-4PCS -Pulley 19mm-

Applicable to most shower rooms, shower rooms and steam rooms. Please note: We only have one size screw for this link. If you need screws of different sizes, you need to purchase a set of 4 multi-functional small rollers and screws. It is used as the shell material of most shower rooms, shower rooms and steam rooms. Plastic, nylon, bearings. Copper + POM wheels, and the screws are made of stainless steel POM ABS brass shaft. The steel part of the wheel: diameter 9mm x height 3mm. The wheel diameter is approximately 19mm x thickness 5mm.