The Prowheel CHARM-FD04S MTB Crankset is designed for 1x 9 and 10-speed mountain bikes, featuring a robust alloy square taper boost crankset and a 32T steel chainring. It is built to withstand the challenges of off-road cycling. With a 175mm crank length and 113mm axle length, it offers optimal performance and compatibility with various bikes. Enhance your mountain biking experience with this crankset for a smoother and more efficient ride.