Features: * brand new and high quality *Made of high quality material, and practical to use *Wear-Resistant Wheels Feature Smooth, Low-Noise Sliding *Swivel to Also Fit Curved and Quadrant Showers Specifications: Quantity: 4 Pieces Type: Shower Door Rollers Material: Plastic, Nylon,Stainless Steel -Bearing Brass Diameter of Wheel: 19/23/25/27mm Width of Wheel: 5/6mm Minimum Hole Size in the Glass: 10-14mm Glass Thickness: 4-6mm. Package Contents: 4 Pcs Twin Bottom Shower Door Rollers Wheels Note: 1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness. 2. Please allow slight manual measurement deviation for the data. brand new and high quality Made of high quality material, and practical to use Wear-Resistant Wheels Feature Smooth, Low-Noise Sliding Swivel to Also Fit Curved and Quadrant ShowersSpecifications:Quantity: 4 PiecesType: Shower Door RollersMaterial: Plastic, Nylon,Stainless Steel -Bearing Brass Diameter of Wheel: 19/23/25/27mmWidth of Wheel: 5/6mmMinimum Hole Size in the Glass: 10-14mmGlass Thickness: 4-6mm.Package Contents:4 Pcs Twin Bottom Shower Door Rollers WheelsNote:1. The real color of the item may be slightly different from the pictures shown on website caused by many factors such as brightness of your monitor and light brightness.2. Please allow slight manual measurement deviation for the data.