Tylaska has made a new retrofit shackle to serve as a replacement for the old plunger style Sparcraft shackle. The Tylaska shackle follows the same basic profile dimensions of the classic Sparcraft shackle to allow for direct replacement, yet has been optimized with FEA to provide a slight increase in strength. The overall shackle is marginally longer so as to allow for a larger bail nut with a removable cross pin. This removable nut allows the option of using the shackle-head on specialized equipment. The hook pin has been improved using Tylaska’s double cylinder design. Tylaska’s double cylinder design is much less prone to falling apart under high wear use.