The strength and durability of urethane will out-last and out-perform standard rubber products in every application. All urethane is red in color except where noted. Urethane Axle Beams Bushing Kit, 7.35″ Long with .006″ Collar & Fluted ID. for Aluminum or Steel Beams 2.000″ O.D. Tube/.120 Wall, 4 pcs., All the Same.