Replacement OEM quality shear bolt protected driveline, fits 5', 5-1/2' and 6' cut mowers both 40hp and 60hp that are shear bolt protected. Can also be used on 4' mower by cutting down to length. This is a new driveline complete with 1-3/8" Z-6 Spline tractor side with quick disconnect yoke and 1-3/8" smooth bore with 1/2" shear bolt hole implement end, series 4 spec PTO, complete with safety shields. This PTO measurers 44" closed length and 63" maximum extended length.