Universal bicycle crank arm, 170 mm, left crank arm, available in diamond and square hole for city bikes, folding bikes, mountain bikes, bicycles

【Material】These bicycle crank arms are made of forged 6061 alloy. This crank arm is sturdy and durable, with high strength, high hardness, and is difficult to deform. 【Size】This crank arm is available in 170mm length and is suitable for 9/16-inch pedals. Before purchasing, please ensure that this size matches your needs. Spindle interface type: square hole. Please check if your crank arm has a square hole orientation. Ensure both left and right sides have the same hole pattern. 【Installation Tips】This crank arm is divided into left and right sides. Please pay attention to the left and right sides during installation. The left side is installed on the left side. Incorrect installation will prevent it from functioning. The left crank arm can be used on MTB, ROAD BIKE, FOLDING BIKE, Cargo Bike, City Bike, and E-bike. Package includes: 1x left crank arm, crank bolt. Crank arm for city bike, folding bike, mountain bike, electric bike, belt drive bike, road bike, junior bike, and exercise bike.