Shower Door Rollers, 23mm Shower Door Rollers Up or Down

Shower Door Rollers,23mm Top or Bottom Shower Door Wheels,Sliding Shower Door Roller for Bathroom Cabin Glass Door A set of 4 pieces: 2 upper shower door rollers + 2 lower shower door rollers The upper rollers have no buffer spring, you can adjust the position of the wheels by adjusting screws Button rollers with damping springs for secure mounting Wheel diameter: 23mm. Suitable for flat sliding shower doors and curved sliding shower doors Constructed of heavy duty zinc alloy, smooth ball bearing and wear-resistant nylon wheel