IXF Integrated Crankset Mtb Crank Arms For Bicycle Hollowtech 104 Bcd Crank 2 Crowns 32/34/36/38T Mountain Bike Connecting Rods. Name:JIANKUN IXF integrated 4 arm crank teeth plate Crank: 170mm Material: aluminum alloy Compatible: single disc, double disc, three disc 9S 10S crankset Specifications: BCD 104,104mm, related holes distance: 74mm Bottom Bracket diameter:23.79mm Weight: a set of left and right crank 710g, plus BB 820g Advantages: the use of aluminum alloy, light weight, appearance and fashion, very cool, axial strength, strong compatibility Hollow one tooth disk axis, for mountain bikes, road cycling bike, folding bike refitting BSA:68--73mm cups-BC-1.3724/68mm Chain line:48.5mm Suit for Shimano, compatible.