For concrete trucks, Durex offers charge hopper liners designed to fit most brands. The company also builds urethane discharge bibs and drum wipers that greatly outperform the typical rubber products used in the industry today. Urethane products are long-lasting and much lighter than steel, allowing for easier handling and installation. Any necessary trimming can be handled in place with a sharp knife or reciprocating saw. Steel does not allow cutting in enclosed areas, requiring removal of the liners for adjustment.