“42T Crankset with Alloy Cover, 170mm Arm for Single Speed & 6/7/8 Speed Bikes”
E Bike/ Bike Crankset 1 Piece/Single 42T Chainring Crankset with Aluminium Alloy Double Chain Cover 170mm Arm 104mm BCD for Single Speed and 6/7/8 Speeds Electric Bike,Bicycles, Folding Bicycle. 42T Chainring: Steel material, high strength and durable.