... :10 years. Machanical steel mobile file cabinet 1.Description: wheel handle, diameter, 210mm; 12 teeth gear, 32 teeth gear, 16 ... teeth gear, 20 teeth gear; tension controller; industrial wheel castor, diameter, 127mm; anti-tilting device; rails are made of 25mm ... line of shelving moves easily and smoothly on the chain-wheel system, manually storing and withdrawing, widely used in archives, ...