Its a snap ring / stop ring for industrial purpose, light or heavy purpose

This is a tools for recoil installations Made in Germany Within this box, u' ll get 20 pcs coils

A wire rope clamp, also called a clip, is used to fix the loose end of the loop back to the wire rope. It usually consists of a U-shaped bolt, a forged saddle and two nuts

A shackle, also known as a gyve, is a U-shaped piece of metal secured with a clevis pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism