For washdown and harsh environments, these trucks are as strong as steel trucks but more corrosion resistant. They are welded for maximum durability. Slide the load plate under flat-bottom loads then tilt back on the wheels to move them. Stair glides near the wheels make it easier to move loads up and down stairs and over curbs. Their rubber tread-on-core wheels have a hard core for strength surrounded by a shock- and sound-absorbing tread for a cushioned ride on all surfaces.