Universal Hollow crank Arm 152/170/175mm Square/Diamond/Spline Left Hand Indoor
Only Left Crank Arm 2. Left+Right Crank Arm. L(Spline):170mm-0.28kg/175mm-0.285kg. Crank Arm length: 152/170/175mm. Notes:L+R crank arm is mainly suitable for e-bikes and indoor bike. Shape:Square/Diamond/Spline Hole.