Arco PULL0012 Dual-V 3/8" or 1/2" "V" Belt Pulley OD:71mm,Bore: 17mm (Hub to center of first groove 22mm,Hub to center of 2nd groove 41mm)
This is not the standard DV pulley because it has an offset. You will notice that the back flange of the pulley is thicker than the other flanges. This has the effect of pushing the pulley further forward. The standard DV pulley (PULL0011) has all the flanges the same thickness