The OTR 15.5” x 2” 7-Spring EZ Pedal Style Clutch Assembly, made with Expertise Built In , features a sealed and permanently oiled release bearing for longer life and less maintenance. The cryogenically treated springs eliminate disc spring failures. With advanced ceramic material, this premium OTR spring clutch replacement delivers 10-15% more holding power versus carbotic. This heavy duty spring clutch also boasts clad bushings that are crimped and pressed into the sleeve, encouraging extended bushing life for your semi truck. FleetPride is your First Click in Heavy Duty .