This carabiner combines a pulley function. This carabiner allows for smooth flow of rope bending and is effective for rescues, etc. Size: 2.4 x 4.3 inches (60 x 109 mm); Weight: 1.8 oz (51 g); Strength: Vertical: 24 kN, Horizontal: 7 kN, Gate Opening: 9 KN; Pulley Part: 11 kN; Gate Open: 0.9 inches (24 mm).