For A Mountain Bike With 1X 2X 3X Speeds, Djc Bike Crankset 104Bcd With DJC Bike Crankset 104BCD with Chainring BSA Bottom Bracket with Spindle for MTB 1x 2x 3x Speed Mountain Bike Black Red Oilslick 170mm 175mm Features 104BCD and 4 Arms: It fit for most MTB frame. 104mm BCD is most popular crankset and price is relatively low. It with spindle so offers higher rigidness when riding. Crank length have 170mm and 175mm for your choice. Multi Speed Support: the crankset can use as 1x, or 2x and 3x speed. Most conditions people prefer use it as 1x. It comes with 1 unit 104bcd narrow wide chainring in package, works for 7-12s chain. Crankset hole for pedal is 9/16 inch(14mm). Thread BSA BB included, Strong Aluminum side cap inside : 99% of MTB frame works with this crankset and thread BSA bottom bracket included. Crankset spindle diameter is 24mm. Forged Aluminum and CNC: it is 3D forged and CNC processing. Material Aluminum 6061. Hollow tech applied for lightweight. A pair crankset weight 680g only. Package Content: a pair crankset, 1pcs 104BCD narrow wide chainring, 4 sets steel bolts, 1pcs BSA bottom bracket, aluminum side cap, wrench for side cap. About DJC dedicates to offer high quality bike parts to riders in world wide. Mainly on seatpost, stem, chainring, crankset. High quality, nice design, cost effective price is our goal. This crankset and chainring produced by top bike parts factory, nice design and durable quality. 104BCD and 4 Arms: It fit for most MTB frame. 104mm BCD is most popular crankset and price is relatively low. It with spindle so offers higher rigidness when riding. Crank length have 170mm and 175mm for your choice. Multi Speed Support: the crankset can use as 1x, or 2x and 3x speed. Most conditions people prefer use it as 1x. It comes with 1 unit 104bcd narrow wide chainring in package, works for 7-12s chain. Crankset hole for pedal is 9/16 inch(14mm). Thread BSA BB included, Strong Aluminum side cap inside : 99% of MTB frame works with this crankset and thread BSA bottom bracket included. Crankset spindle diameter is 24mm. Forged Aluminum and CNC: it is 3D forged and CNC processing. Material Aluminum 6061. Hollow tech applied for lightweight. A pair crankset weight 680g only. Package Content: a pair crankset, 1pcs 104BCD narrow wide chainring, 4 sets steel bolts, 1pcs BSA bottom bracket, aluminum side cap, wrench for side cap.