【Material】: 165mm crank arm length for your choices , 6061 T6 heat treatment standard square taper crank, 7075 narrow wide teeth single speed chainring，avoid dropping . crank bolts included.
【Crank】: 104mm BCD high intensity MTB crank set, fits for Single Speed Crankset ,Crank related holes distance 74m,
【Chainring】: single speed narrow wide chainring, PCD:104mm. Size:30T. Shape: Crown. Color: black.
【Scope of application】: Square tapered hole ,recommendable bottom bracket size:110mm/110.5mm(not included) .Pedal size : 9/16" , Fit For Mountain Bike, City Bike Crank Set etc.
【Package】: MTB Crank * 1 set(left& right crank), Mountain bike single speed chainring * 1 pcs, bike chainring bolts * 4 sets.