Velo Orange Grand Cru Drillium Cranks - 165mm 8/9/10 Speed 48/34t Square Taper JIS Spindle Interface Polished AluminumVelo Orange Grand Cru Drillium Cranks 165mm 8 9 10 Speed 48 34t Square Taper JIS Spindle Interface Polished Aluminum. Back in the day racers drilled holes in their chainrings to make them lighter. The weight savings were minimal but they sure looked cool. The Velo Orange Drillium Crankset recaptures the look while upgrading to modern manufacturing techniques and tolerances. Crankarms and chainrings are cold forged from 7075 aluminum alloy All