Material:2 sets of shower door roller sets, each with two wheels. The wheels are made of nylon and the other parts are made of stainless steel.Top wheel: use a screwdriver to turn the top wheel stainless steel adjusting screw clockwise or counterclockwise to adjust the glass height.Bottom wheel: the spring knob of the bottom wheel can automatically adjust the height to the top wheel by pressing.Specifications: suitable for glass aperture 12-14 mm, suitable for glass thickness 4-6 mm.Application:The shower door rollers are installed at the top and bottom of the shower door to make it easy to open and close. Suitable for most shower rooms and steam rooms.Product DescriptionThe shower door roll is made of high quality stainless steel shaft and nylon material, which is rustproof and durable. Equipped with screws and anti-collision blocks.There is no noise when opening the shower door, and these glass door rollers help it slide smoothly. Easy to install and maintain.Product SpecificationMaterial: stainless steelColour: silver.Size:23*5mm/0.9*0.2inchQuantity:4NotesDue to the light and different computer monitors, the colour of the item may be slightly different from the pictures.Please allow 0.5 - 2 cm difference due to manual measurement.If you have any questions or have problems with the products you received, please contact us in time.Package Includes4*Bathroom Pulley