The original tubular chromoly cranks! 100 heat-treated tubular chromoly dual pinch bolts wrapped and welded at the pedal bosses. Set includes 19mm x 6-tooth heat-treated chromoly spindle spindle bolts and sprocket bolt. RH 11.47 oz (325g) / LH 10.79oz (306g). BB set sold separately. Use 135228 for Spanish shell 135230 for Mid shell 135226 for Euro shell or 135224 for American shell. 32.8 oz / 928g.