The Crank is compatible with single and double, triple speed chainring,not only high compatibility,and ultralight,with high strength axle. Crank: Brand: BUCKLOS Color: Black Weight:541g Bolt Center Diameter: 64mm/104mm BCD Crank Length (mm): 170mm Material: CNC Forged 6061 Aluminum Alloy Compatible: single, double, and triple speed chainring Advantages: light weight,stylish appearance,very cool,high strength axle,strong compatibility Package：1PC Crank+4pc Chainring Bolts Durability:These crank sets are made from strength material, ensuring they are long-lasting, lightweight and handle the abusive ways of the trail. Suit for mtb, hybrids /touring bikes Square Taper Crank Arm:Cranks are made from sturdy forged CNC 6061 Aluminum Alloy for superior rigidity, high strength and super low weig.
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