SMR4 Reducer Kit Part Number: 4WTBK-2 7/16 SMR4 Reducer Kit quantity Request Quote Category: Bearings & Bushings Description Description Part Number: 4WTBK-2 7/16 Related products P209 Pillow Block Request Quote 1” 3/8 QD Bushing Request Quote AMCAN insert bearing NA209 Request Quote 2″7/16 RBL QD Bushing Request Quote Post navigationPrev SK 1 15/16 RBL Bushing Next Shaft Mount Bushing 1”15/16