• Crank : 104 BCD mountain bike crankset. length of crank arm is170mm, crank related holes distance is 74mm, crank weight: 550g, fit 7-12S chains and single/double/triple speed chainring
• Chainring : snail single speed narrow wide teeth chainring, 30T/32T/34/36/38T/40/42T, round/oval chainring,thickness is 4mm (1.9mm narrow, 3.7mm wide)
• Bottom Bracket : Size is 41*24*24 mm can fit bike bottom 68-73mm,ideal for Shimano, FSA compatible. Giant ATX770 ATX770-D XTC750 and so on
• Material : Crank and chainring made of aluminum alloy, light weight, high axial strength and compatibility
• Note:These crank and chainring are only suitable for single speed. Suitable for most mountain bikes ,Compatible With Shimano Sram FSA