STAINLESS STEEL: This floor guide is made of high quality 304 stainless steel, which is resistant to acids, alkalis, temperatures, and abrasions. FLOOR MOUNT: The floor guide can be mounted on the floor to align the glass door so that it can slide straight when opening and closing. ADJUSTABLE SIZE: The guide rail is adjustable for glass thickness of 8-14mm/0.31-0.55inch and ensures a tight and smooth fit. FINE WORKMANSHIP: It also prevents the glass door from sinking downwards. Smooth, polished and beveled edges, ergonomic design avoid unexpected injuries and provide comfortable hand feeling. WIDE APPLICABILITY: Brushed surface treatment, fine workmanship, suitable for frameless glass doors, such as shower room, glass partition, etc.