Features: 1Made of stainless steel, shower door rollers are sturdy and durable, strong carrying capacity, long service life. 2The double shower door roller has good impact resistance and wear resistance, and the roller bearing rotates smoothly. 3The rollers of the sliding shower door are easy to install and replace. Each roller of the shower door comes with a screw and a plastic cover. 4You can throw away old, worn, noisy or damaged shower door rollers and replace them with our silent rollers. 5If you have any problems in use or installation, please contact us in time,and we are happy to serve you. Item Type: Material: Stainless Steel Adjustable Height: Approx. 27mm / 1.1in Bracket Thickness: Approx.11mm / 0.4in Package Included: 4 x Upper Rollers 4 x Lower Wheels 8 x Plastic Caps