Rock Exotica has refined the carabiner far beyond the offerings of other manufacturers. The Pirate is the best belay biner. Improved, patented Keylock design. The highest inward strength and the biggest gate opening. Weight: 3.09 oz (87 gm) Breaking Strength Major axis: 26 kN Minor axis: 12 kN Open gate: 7 kN Inward against sleeve: 6 kNGate opening: 1.0” (25.4 mm) The Pirate Twist Lock is NOT suitable for climbing.