No. 1 drive shafts are normally used where standard end plates are furnished. They are jig drilled for ease of installation.
Martin Drive Shaft, Standard End Plate, 1-1/2 in Shaft Dia, 13-1/4 in Shaft Length, 2 Bolts, 3-1/4 in Keyway Length, 3/8 in Keyway Width, 0.188 in Keyway Depth, Steel, Protective Coating, 13-1/4 in OAL