Flush :: Use for applications where protruding fittings cannot be used, such as line shafting pulleys or revolving bearings. :: Fittings sit flush Flush-mounting reduces potential for damage. :: Fittings can be installed in hard-to-reach areas Item Id Description Type A B C mm mm mm 550011 Drive Str. 9.5 7.9 Φ6.0 550033 Drive Str. 4.4 3.2 Φ4.0 550066 Drive Str. 7.1 5.9 Φ8.0 550077 Drive Str. 8.3 7.1 Φ9.5