Coupling, Flex, 1/2 In/ OUTSIDE DIAMETER: 1.125 INCHES NOMINAL LENGTH: 2.562 INCHES NOMINAL THREAD SIZE DESIGNATOR: 1/4-20 BOTH ENDS BORE DIAMETER: 0.5000 INCHES NOMINAL BOTH ENDS BORE LENGTH: 0.6875 INCHES NOMINAL BOTH ENDS BORE SHAPE: STRAIGHT BOTH ENDS FURNISHED ITEMS AND QUANTITY: SETSCREW 2 DESIGN TYPE: BONDED RUBBER KEYING FACILITY: NOT INCLUDED BOTH ENDS BORE COUNTERBORE FEATURE: NOT INCLUDED BOTH ENDS SECURING METHOD: THREADED HOLE BOTH ENDS THREADED HOLE QUANTITY: 1 BOTH ENDS THREADED HOLE LOCATION: CENTERED 0.344 INCH FROM END OF HUB BOTH ENDS COUPLING BOLT: NOT INCLUDED