4pcs shower door rollers, 23mm solid zinc alloy twin wheels. Replacement runner pulleys for shower enclosures, screens

Roller material: Solid zinc alloy with plastic cover & Roller wheel diameter: 23mm & Roller wheel thickness: 5mm Pay Attention before assembly: A. Suitable for 4-6mm thick glass B. The diameter of the glass opening should be greater than 12mm C. 23mm diameter wheels can be put into the shower enclosure rail D. The spacing from the opening of the upper wheel to the top is less than 12mm To fit maximum glass thickness: 4-6mm & to fit Minimum opening hole size in the glass: greater than 12mm. For glass thickness is more than 4mm, we suggest that it is no need to use the gray plastic washer for assembly, because of use this plastic washer will no enough space to fix it tightly. DIY replacement: It is easy and convenient for this door knob DIY replacement; you can simply disassemble it by screwdriver and replace with new rollers on glass doors. Package includes: 4pcs shower door Rollers (2pcs top rollers and 2pcs bottom rollers).