Internal yokes – there are two, at every end of the PTO shaft – tractor and apply. This is soldered to the driver’s end. Cardan Joints – There are two, positioned on every single stop of the PTO shaft. Outer Yokes – There are two, positioned on both ends of the PTO shaft. It has a “Y” link to u and a woman gap. Security Chains – Chains are used to secure PTO shafts to equipment and tractors. Basic safety Guards – These cones are situated at equally ends.