Description
Compatible Speed :Suitable For 18/21/24 Speed Mountain Bike..Crank Length :170mm,Aluminum Material Crank Arm, Carbon Steel Chainring..Design:Wide Tooth And Narrow Design,Greatly Increases The Contact Area Of Chain,So That Each Tooth Can Be Fully Inserted Into Chain,Increasing The Friction,So That,You No Longer Worry About The Chain Falling Off..Package:1 Left Crank,1×Chainring With Crank 2 Bolt Cover..Usage:Widely Used On Mountain Bike,Hybrid Bike,Fat Bike.