This is a rear output shaft for a Plunger transmission in a Rokon motorcycle. It is supplied with 2 #606 keys, 2 #404 keys and a roll pin for the miter gear. It is made out of precision ground C1145 steel. This is a direct fit for an older Plunger. It does not have the snap ring groove for the newer bikes but the correct length spacer is included to replace the snap ring.