This Luxor H Wilson EC Series Cart features 4 in. plate casters, 2 with locking break. This cart features 2 flat shelves and 1 tub shelf with an overall weight capacity of 400 lbs., evenly distributed. All Luxor H Wilson plastic carts are made of high density polyethylene structural foam molded plastic shelves and legs that won’t stain, scratch, dent, or rust.