Flange Coupling Kit For Worm Center Distance 2.62 in Motor Frame Designation 143TC/145TC Motor Coupling Bore Diameter 7/8 in Motor Coupling Keyway Depth 3/32 in Motor Coupling Keyway Width 3/16 in Reducer Coupling Bore Diameter 3/4 in Reducer Coupling Keyway Depth 3/32 in Reducer Coupling Keyway Width 3/16 in Flex Coupling Material Cast Iron For Use With 143TC/145TC NEMA Frame Motor Dayton Indirect Drive Right Angle Speed Reducer Worm Center Distance 2.62 Includes Mounting Hardware