For the minimalists and serious gram-counters, they don’t come much better than the HMS Nitro Lock. This ultralight locking ‘biner is the ideal choice for those tackling long mountain routes and scaling lofty peaks. It features a rounded body shape and thinner gate, and is designed to maximize both safety and performance. The new design offers an optimal area for working with the Italian hitch knot (HMS) and increases the strength in gate-open and minor axis positions. The I-Beam construction offers a fantastic strength-to-weight ratio while still maintaining a rope-friendly radius for easy handling. Finally, the keylock nose on the HMS Nitro Lock has also been shaped to fit snugly into the tension release point on the Piu 2 belay device, meaning the device activates a second after the rope is weighted.