1″ Deluxe Flexpruf Solid Steel Axle is made out of extremely tough steel. The ends step down from 1″ to 3/4″ and have a 3/4 – 16 thread. Short end is 1-1/2″, thread length is 1-1/8″. Two keyways (1/4″) are offset 180 degrees for stress relief, balance and unrestricted positioning of brakes, bearings and hubs. Ends are drilled for your cotter pins or safety wire. Brightly plated and poly-wrapped for protection. Axle diameter is 1″, overall length 38″, shoulder to shoulder is 35″.