4 x Shower Door Rollers/Runners/Wheels V Grooved 23mm Wheel Diameter L041-V Wheel Diameter_22mm A - Wheel diameter: 20mm

A  - Wheel diameter: 20mm (wheel thickness is 6

4 x Shower Door Rollers with V grooved wheels

C  - Diameter of hole in glass: 13 mm

Bottom/Lower roller clamp

B  - Overall length: 31mm

4 x Shower Door Rollers/Runners/Wheels V Grooved 23mm Wheel Diameter L041-V Wheel Diameter_22mm A - Wheel diameter: 20mmV Grooved Replacement Shower Door Rollers Description: 4 wheels and 4 screws supplied per pack. 100% brand new and high quality. Wheels are internally threaded. Specifications: A Wheel diameter: 23mm. B Wheel thickness: 6. 5mm. C Protruding Boss Diameter: 9mm. D Protruding boss height: 4mm. E Hole Diameter: 3. 3mm Inner groove diameter: 17. 5mm Materials: 304 stainless steel micro bearing. Brass. Nylon outer wheel. Other products: For 19mm diameter