These parts appear to be New-Old-Stock and-or Salvage Parts in excellent condition. They are from a kayak pro shop that closed. Your satisfaction is guaranteed.
Best used as a replacement Rudder Pin for applicable Hobie brand kayaks. Known as the Hobie Twist and Stow Rudder Original Pin. These may come Black or Gray.
Rudder Pin is approximately 3 1/4 inches long, 5 1/16 in diamter, head is 1/4 in diameter. Pointed end is split and barbed. Hobie part number 81394001.
See the Hobie Twist and Stow Rudder System Repair Manual