This single clevis connector from PlaygroundEquipment.com is exactly what the playground doctor ordered for those fed up with their often-loosening S-hooks. The purpose of a clevis connector in playground equipment is to serve as a reliable alternative to conventional S-hooks, creating a solid connection that won't come undone. Using traditional construction to maximize durability and versatility, these hooks are a good fit with most playground equipment, and they work particularly well with larger swing seats.