Technical specifications: Material crank: aluminum 6000 Material crankshaft: aluminum Material chainring: steel bolt circle diameter : none, direct mount Crank arm length:170 Chainring: 34 X-SYNC 2 Direct Mount Chainring Compatibility drive: 1x12 or 1x11 axle type : SRAM DUB Diameter crankshaft: 28.99 mm Compatibility Bottom Bracket: SRAM DUB BSA73, DUB PressFit89 / 92, DUB PressFit30, DUB BB30 chain line : 52 mm BOOST Q-factor: 172 mm Color crank: black Color logos: white ✔ #readystock #brandnew ✔ ALL components/ parts/ accessories ✔ Ship from Penang poslaju ✔ Get your parcel within 2 working days! ✔ 7days size exchange ✔ Registered SSM company