Crank description: Crank length: 170mm Material: AL6061 aluminum alloy Compatible: single/Triple chainring; 7/8/9/10S chainring Specifications: BCD: 104mm ,related holes distance: 74mm Weight: about 637g Color: black, red Advantages: the use of AL6061 aluminum alloy, light weight, appearance and fashion, very cool, axial strength, strong compatibility Bottom Bracket description: Can fit bike bottom 68-73mm Size: 41*24*24 hollow one tooth disk axis, for mountain bikes, road cycling bike,folding bike refitting BSA:68--73mm cups-BC-1.37*24/68mm Chain line:48.5mm Suit for Shimano, FSA compatible. Giant ATX770 ATX770-D XTC750 and so on.
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