QD Bushing, SK, 40 mm B Dia,1.875 in L
-18 x 2 in, System of Measurement Metric, Bushing Diameter 2.Quick Detachable Bushing, Bushing Type Quick Detachable, Bore Bushing Series SK, Bore Diameter 40 mm, Length 1.5 mm, Keyway Width 12 mm, Length Less Flange 1.875 in, Bolt Circle Diameter 3.