High quality T4 Pto Shaft: This T4 PTO shaft is a nicely-forged series4 driveline shaft with CE certification. It is made up of a solid 20CrMnTi carburized steel common joint and a Q345 metal tube inside the protect. The PTO shafts are sturdy and strong in working with all kinds of agricultural machinery.Splines and Spherical Finishes: Tractor End: 1-3/8″ x 6 Splines Execution End: 1-3/8″ x Spherical End. Our bristle PTO shafts are built with 6 splined finishes and are common 1 3/8″ size to perfectly match instruments and tractors of the identical size and type, supplying your equipment a outstanding drive.