With its revolutionary, patent-pending design made possible by our in-house hot forge, the Black Diamond GridLock Screwgate eliminates the dangers of cross loading. Designed specifically for belaying, the intuitive, easy-to-use GridLock isolates the belay loop behind its uniquely shaped gate, thereby keeping the carabiner in its proper orientation. The GridLock's I-beam spine transitions into a large, rounded rope-bearing surface for maximum strength and smooth rope feeding. Simply put, you'll never have to deal with a shifting, cross-loaded belay carabiner again. Weight 76 g (2.7 oz) Hot-forged construction. I -beam spine transitions into a rounded, large rope bearing surface. Intuitive and easy-to-use design. Screwgate sleeve. Patented, innovative design isolates belay loop to eliminate cross-loading. Isolates belay loop. Type H or HMS connector. For dynamic belaying using a Munter Hitch or belay device.