Dual chambers for added security Novel G design prevents accidental gate disengagement Stainless steel construction Secure stainless steel wire gate closure Lock down your keys and gear for the long haul with the G-Series SlideLock carabiner. Featuring the novel G-Series design customers know and love, this carabiner is comprised of two distinct chambers connected by a spring gate, allowing you to clip items into the first chamber, then slide them through the inner gate to the second chamber for safekeeping. The addition of a SlideLock mechanism on the outer gate allows you to lock the gate securely, preventing accidental gate opening and gear loss. Whether stowing your daily keys, water bottle, or backpack, the G-Series can hold it all with a weight rating of 25 to 35lbs. And with its locking outer gate, you can confidently clip to your belt loop, bag, backpack, or suitcase worry-free. Choose from the #3 size for smaller and lighter items or #4 size for mid-size, heavier gear.