Both are spring-loaded FastGun turnbuckles. FastGun Apex adds a built-in spring tension indicator and works with Outboard or Inboard tie downs. FastGun Apex is the newest FastGun turnbuckle. It keeps the spring-loaded design and quick-disconnect handle FastGun owners know, adds a built-in spring tension indicator, and works with both Torklift Outboard tie downs and ApexAnchors Inboard tie downs. Original FastGun...