QD Overrunning Coupler

QD Overrunning Coupler New splined quick disconnect overrunning coupler. Coupler female I.D. is 1.375" 6 spline and male O.D. is 1.375" with 6 splines. The coupler is rated at 75 max horsepower. Female: ID 1.375" 6 Spline Male: OD 1.375" with 6 Spline Maximum Horse Power: 75