Type 1 (1.3/8"ths 6 Spline) required for all single clutch tractors non live drive (fergie type) with PTO cross hole roll pin included.
Type 2 (1.3/8"ths 6 Spline) required for all single clutch tractors Universal (fits ferggie and all others with no cross hole drilled Tractor PTO shafts)ball bearing gripped on shaft and collar fit/ remove mechanism