Hope EVO MTB Crankset - Double SpiderThese top-quality cranks are specifically designed for MTB use as they offer increased stiffness for excellent pedal stroke performance. This stunning model features an expanding spline axle/arm interface and an incredibly versatile spline mounted double spider/chainring system for ease of use. To top it off, the crank arm’s forged and CNC-machined 7150 series aluminium construction is immensely tough for handling sudden knocks and bumps.Features: Material: Forged and CNC-machined 7150 series Aluminium Use: MTB BCD: 64/104 Length: 165, 170 and 175mm length options available to select Axle: 30mm oversized axle Speed: 9,10,11 and 12 speed compatible Spider: DoubleBuy Hope Components from Chain Reaction Cycles, the World’s Largest Online Bike Store.