GANOPPER 30T MTB Crankset 1X Mountain Bike Crank Arm Set 170mm with 68mm 73mm BSA Bottom Bracket for BMX Road Bicycle

Material: Alu 6061 MTB Bike Crank ,Design of Stiffener,Durable,Light Weight.7075 Alloy Aluminum Single Speed 30 Tooth Narrow wide Chainring,rainbow plating chainring bolts Size: 30T,Shape:Round. Chain ring Weight: 28g(0.06 lbs) ,Fit for 9 Speed,10 Speed,11 Speed Mountain Bike crank set,Easy to refit Singlespeed MTB, Road Bike BMX Crankset etc., BCD: 104 mm(Outer Circle) .Crank Arm Length: 170mm .Color: Matte Black . Compatible with 9/16 inch pedals; 1/2"*1/8" chain work well on this crankset Bottom Bracket: Cups-1.37*24T/68mm~73mm(English Standard),Compatible with: Shimano, FSA, Gaint ATX770 ATX770-D XTC 750