Old school BMX builders can rejoice, the Redline Flight cranks are here to complete your retro build. Iconic Redline Flight tubular chromoly cranks are finished to perfection. 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. BB set sold separately Options for 175mm or 180mm Weight: 625 grams (175mm Arms) .