1、[Cold Rolled Steel and Load 120KG] The drawer slides are made of 2mm thick high density, high strength cold rolled steel plate. It can keep your drawer stable and safe full load push and pull test without damage and load 120KG. 2、[600‑1450mm] The length of the shoe cabinet rail is 600mm, and the fully extended length is 1450mm. The full extension length is enough to leave enough space reserved for screwing into the stairs. 3、[Full Extension] Due to the full extension function of the staircase base cabinet slides, the drawer can be pulled out completely, making it easy to access the entire drawer storage space. 4、[Rustproof and Smooth Work] With electrophoretic coating surface treatment, our slides are superior in rustproof ability and oxidation resistance. The interior is equipped with industrial grade steel balls to minimize friction resistance. 5、[Use] Drawer slides rails track is suitable for cabinets under the stairs and any staircase cabinets, also suitable for wine cabinets, closets and so on. The width of the cabinet is suitable for 400‑600mm.