Durax Bayonet Crank Arms & Chain Ring

A 1951 Johnny Berry road bike at speed in racing trim. Note: distinctive thin profile of Durax bayonet crank arms with edge fluting. Also note Constrictor Cobra pedals, Simplex JUY 51 rear derailleur, rod front derailleur, Simplex down tube shifter (right side only), CLB Competition side pull brake calipers, sprint wheels, small flange hubs, wing nuts, narrow range freewheel, toe clips, and handlebar bottle cages (photo: Courtesy of Mark Hudson)