Size Name: Roller diameter 20mm 8X Zinc Alloy Top& Bottom Singel Shower Door Twin Wheels Rollers Runner(4 top singel +4bottom roller Diameter of the Wheel:20MM/23MM /25MM/27MM After you choice which diameter you need. after order you can give us a message We are factory and good prodcues and good price if have any need just write to us Rolller glass hole is 12mm

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• 8X Zinc Alloy Top& Bottom Singel Shower Door Twin Wheels Rollers Runner(4 top singel +4bottom roller
• Diameter of the wheel:20MM/23MM /25MM/27MM Can Choice
• Width of the wheel: 6mm. Minimum Maximum glass thickness: 6mm.
• Material: Zinc Alloy +ABS electroplating

Enter your model number above to make sure this fits.Pinghu City Bathroom Accessories