BLACK DIAMOND GridLock Screwgate Carabiner Synthetic 1" high 4" wide Hot-forged construction. I-Beam spine. Easy to use. Screwgate sleeve. Innovative design isolates belay loop to eliminate cross loading. Weight: 76 g. Closed gate strength: 22 kN. Open gate strength: 8 kN. Minor axis strength: 7 kN. Gate opening: 21 mm. Imported.