Martin 40H18H MST® H Bushed Solid Type 3 Split Single Roller Chain Sprocket, 3/8 to 10-1/2 in Dia Bore, 3.136 in OD, 40 Chain, 18 Teeth, 1/2 in Pitch, Steel
Martin split taper sprocket is another style of bushed sprocket. The split taper bushing, when installed, offers a wide range of bore sizes.
Martin Split Single Roller Chain Sprocket, MST® H Bushed Solid Type 3, 3/8 to 10-1/2 in Bore Dia, 3.136 in Outside Dia, 40 Chain, 18 Teeth, 1/2 in Pitch, 2.879 in, 2-1/2 in Hub Dia, 1-1/4 in Length Through Bore, Type H Split Taper Bushing, Steel