【High-quality materials】 : Made of high quality hard plastic for durability. It has good impact resistance and will not rust. This is a fully adjustable floor rail that can be used for all door thicknesses. 【Easy to install】: Adjust the distance freely according to the thickness of the door and tighten the screws to fix it. Easy to do by yourself without any tools. 【 compatibility】The adjustable sliding door rollers are suitable for door panels from 30mm to 60mm, and the adjustable design makes it convenient and quick for you. Easy sliding: Smooth bearings can slide easily, then the door slides easily. The bottom of the floor guide is flat, does not damage the door, and the floor can slide smoothly and quietly. Simple and beautiful style: No need to drill holes in the wall, no damage. The floor guide is installed on the floor in a delicate and lightweight shape. The design is very simple and beautiful.