Material: ABS body, metal ball-bearing rail. 1)A-Aluminum columns, B-plastic-steel columns. 2)Dust basket, concave top covered with transparent soft plastic glass3)Centralized lock, Double sides with five trays each, Inner with 50 units cassette totally. 4)one big ABS drawer bottom. 5)Drawers repositioned easily. 6)Luxurious noiseless casters.
