Birdhead Cut bicycle chainwheel and crank, model SC-CW-101, a toothed chainring with crank arm for bicycles. The chainwheel drives the bicycle chain as the rider pedals, and the crank arm carries the pedal at its outer end. The chainring web is cut in an open, decorative birdhead pattern inside a ring of teeth, and the set has a bright silver finish. It comes in 44T, 46T and 48T sizes. The crank is made in the size to order, and the finish is BCP or black.