Features: * brand new and wonderful *Made of wonderful material, and realistic to apply *The diameter of the glass opening must be 4-6mm. *Suitable for 3-6mm Thickness Glass Doors. *Made of Nylon, Brass and Ball Bearing, it's freed from Any Noise *Have the Advantage of Strong Load-bearing Capacity. *Good Tolerance of Water and Anti-Rust Property. *User-Friendly and Easy to Replace and Install. Specifications: Material: Nylon + Brass + Ball Bearing Color: White Diameter Size: 26mm Thickness: 6mm Package Contents: eight * Shower Door Rollers Note: 1. The genuine coloration of the thing could also be barely different from the photographs proven on web content attributable to many points akin to brightness of your visual show unit and light brightness. 2. Please enable slight instruction manual size deviation for the data.