PTO Shearbolt Clutch 1-3/8"-6 Spline Heavy-Duty Coupling - Sparex Part S.7538The Sparex S. 7538 PTO Shearbolt Clutch provides a dependable connection between your tractor and implement, ensuring smooth power transmission while protecting vital driveline components. Designed for agricultural machinery, it prevents costly damage by shearing under excessive torque loads, maintaining equipment safety and operational efficiency. This clutch features a 1 3 8'' 6 spline shaft with a U J size of 35 x 106. 5mm and a torque setting of