The Shepherd Hardware 400-Series Polypropylene Casters are lightweight, non-marking wheels that are impervious to water and have strong chemical resistance. These casters are a long lasting, economical alternative to other industrial caster materials. Shepherd Hardware has an expansive line of polypropylene casters with a variety of options and sizes to fit all caster needs. The Shepherd 9012 model features an 5 inch diameter wheel, top brake, 360-degree swivel mount, and a 400-lb load rating. Shepherd 400-Series casters are recommended for tool boxes, bakery racks, dollies, stock trucks, hotel trucks, and other institutional uses requiring excellent mobility.