【Safe and Stable】 The adjustable floor guide adopts carbon steel frame with black surface, matching screw for maximum durability, fully adjustable rollers ensure smooth and safe sliding. 【Adjustable Rollers】 The invisible rotating wheel on one vertical side not only makes the sliding smoother and quieter, but also saves more space. Built-in bearing provides ultra-smooth rolling, convenient to use. 【Flat Bottom Design】 The sliding door roller does not need grooves at slot on the floor, will not destroy your floor. The bottom of the chase ensures the door guide on the floor without scratching the floor, more stable and beautiful. 【Easy to Install】 Adjustable floor guide is easy for installation, fix 2 screws on the bottom plate of the floor, adjust and tighten. Adjust the door by adjusting the position of the wheel. 【Wide Application】 This reliable door track can be used with 3 inch thick doors, the barn door floor track is suitable for all brands of barn door, which can provide you