Two oversize 12" wheels offer easy movement over uneven surfacesRuggedly constructed from commercial grade cold rolled steel, with heavy-duty 16-gauge, 1" round tube steel frames. Components are precisely made to eliminate any sharp edges. Curved handles provide comfort. Includes 3 tiers. Two tiers have 2 sloped shelves per side, bottom shelf is flat. For quiet operation, all undersides are covered with sound absorption material. Sloped shelves are 18-gauge steel and measure 6 3/4"D. Flat bottom shelf is made from 16-gauge steel and is 16 1/4"D, ideal for transporting oversized books or heavy parcels. Middle shelf clearance is 11 3/4"; bottom shelf clearance is 11". Front 12" big wheels move loaded book trucks over thresholds, cord covers, curbs and many other uneven surfaces; rear wheels are 5" ball bearing swivel casters. Ships via Truck. FOB: ILHandle grips (keyword: handle pads), available and sold separately, are made of padded foam to provide comfortable, non-slip cushioning for your hands.Optional book truck bumpers (keyword: bumpers) slip onto the legs above casters to prevent trucks from bumping against furniture or walls. Finished with durable baked enamel paint available in 4 colors: -01 black, -48 putty, -53 burgundy, -55 navy To view finish choices, simply click on the View Swatches button located above.Overall dimensions: 49H x 38W x 22"D