Performance Design: John Deere HB Section V-belts are engineered to fit securely into the grooves of the pulley, maximizing power transmission and enhancing stability Noise Reduction: V-belts significantly reduce noise levels and provide abrasion resistance, ensuring both quiet operation and long-lasting performance Specification – Section Type: HB, Effective Length: 186.25 inch (4731 mm), Width: 0.68 inch (17.3 mm), Thickness: 0.68 inch (17.3 mm) Z820A Z830A Z840A Z850A Z860A. Our John Deere Parts Technicians are here to help ensure you get the right parts for your application.