High Strength Steel Rope Snap Hook, Sheet Steel Safety Snap Hooks for Rock Climbing High Strength Steel Rope Snap Hook Sheet steel,Heat treated 100% Proof loaded to 3600lbs/16kN Min. Breaking load: 5000lbs/23kN Net weight: 367g Meets or Exceeds: ANSI Z359.12-09ã??CSA Z259.12-16ã??EN362-2004