Tapered Hole Ø 17.6mm > Ø 20mm with 5mm Keyway
Ø 7/8" Fine Spline Tapered
Ø 7/8" 6 Spline Tapered
Ø 1 1/4" 48 Spline Tapered
Ø 3/4" 36 Spline Tapered