A dock plate is a very effective way to bridge uneven trailer and dock heights. This is an easy and efficient way to safely transport goods on and off of a wide variety of trailers with varying load heights.  California Caster carries a large range of different size aluminum dock plates in different material thicknesses that can handle up to 10,000 pounds.  Some dock plates can be purchased with added steel curbs on either side for added reinforcement and to help keep the load contained to the plate.