Bolany 170mm Gravel Bike Crankset 42T Single Speed Mountain Bike Cycling Road Bike Crank Arm Set GXP Single Chainring. Product name:Hollow integrated crank. Number of teeth: 10-11 speed compatible. Weight:About 490g(Only right crank).
Process: CNC, One-piece forging, anode sandblasting. The size is measured manually. Please refer to the actual situation.