Ergonomic 20 in. Bed Height - Less bending means easier loading and unloading, and keeps material closer to most machine heights. Highly Maneuverable - Four swivel casters with 6 in. hard tread phenolic wheels allow movement in any direction. Useful in tight work areas with long loads and when moving around corners. 3000 lbs. Capacity Each - Use for both transport and storage. Combine multiple units for greater capacity and to support longer loads. Loads on single units must be centered on truck.