Faster, easier replacement of clutches. Align clutch plates and pilot bearing accurately. Shaft and bushings provide an accurate fit for eight pilot bearing sizes. Two turned size (1" and 1-1/8") fit 90% of the clutch plates and cone handles the rest. Shaft and bushings to fit 8 pilot bearing sizes: 0.587", 0.650", 0.673", 0.748", 0.787", 0.807", 0.981".