Samox AF29 Crankset - 170mm 9-Speed 48/36/26t 104/Riveted BCD JIS Square Taper Spindle Interface Spindle Bolts Sold Separate BLKSamox AF29 Crankset 170mm 9 Speed 48 36 26t 104 Riveted BCD JIS Square Taper Spindle Interface Spindle Bolts Sold Separate Black. The Samox AF29 crankset is optimized for trekking bikes and features forged aluminum crankarms that mate with a JIS Square Taper spindle (bottom bracket and spindle bolts are sold separately. JIS Square Taper Spindle interface (Bottom bracket and spindle bolts sold separately) Designed for use with 9 Speed drivetrains Rigid