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 stainless hardware with allen head nuts/bolts Includes self-extracting aluminum machined dust caps and BB bolts 48/34t 110 BCD chainrings are thicker for less flex Q Factor: 143mm / Chainline: 43.5mm Fits: JIS square taper spindle (not included) Suggested Bottom Bracket Spindle Length: 118mm Specifications BB IncludedNoChainline/Hub Compatibility130 HubsChainline/Hub Compatibility135/142 Road Disc Hubs > 415 mm ChainstayChainring BCD110ColorSilverCrank Intended UseRoadCrank Length (mm)165Defined ColorSilverDrivetrain Speeds8,9,10Number of ChainringsDoublePedal Spindle9/16"Rings48/34Spindle Interface TypeSquare Taper JISWeight645keyword searchVelo Orange Grand Cru Drillium