6wtbk-2.12, tapered bushing kit – 2 1/2″ ; fits reducer styles smr6/wsmr6 6wtbk-2.12, tapered bushing kit, 2-1/2″-; fits reducer styles smr6/wsmr6; sized for shaft mount reducers; interchangeable with other manufacturers; tapered support on both sides of the reducer; includes fastening bolts and a full length shaft key