Floor guides are made of high-quality carbon steel and are sturdy, durable, and secure. This floor guide provides high performance for your sliding gate and prevents sideways swing. The guide mounts invisibly to the wall behind the gate, giving your sliding gate a clean appearance. Easy installation, no drilling required, and no damage to the floor. This adjustable floor roller guide is suitable for both entry doors and sliding doors. Fits sliding gates with a thickness of 2.5 to 4.5 cm.