Brand: ; Condition: Brand New; Material: Solid Steel and POM NYLON; Surface: Frosted black; Fit door panel thickness: from 1 15/16 to 0; Size of roller: 14/5(dia)* 4/5" (H)24 hours online customer service: We provide 24-hours online customer service to help you to solve the problem more efficiently.Adjustable: Adjust range from 1 15/16 to 0. Adjust the two rollers to fit the door panel and then tighten the screw in the bottom of the floor guide so that the rollers will be fixed in the workable position.Package Include: 2x floor guide; 4x screws; All necessary hardware is included as you see in the pictures.Easy To Install: Mount to the wall with screws, and no groove required for door. By adjusting the rollers in the track to fit your door panel. No need to drill holes in the floor.