Mountaineering essential heavy duty carabiner, Safe and Lightweight Carabiner，new UIAA certification in 2022 (certificate number: CHN 21-6106), you can check it on UIAA website. Not only that, we also show you the video of product pulling force in real time, which can fully satisfy climbing, aerial work, tree work, arborist work, mountaineering, hammock, camping, outdoor equipment, etc. At 3.8 inches long, 2.3 inches wide, and 0.38 inches thick, it weighs just 2.64 ounces, 1/2 the size of a phone. No one wants to climb with a bulky carabiner, our products are not only sturdy but also light enough to fully meet your mountaineering needs. 2 packs and 5 packs, a total of 4 colors are available to meet your different quantity and color needs. Come with a product maual, 30 days no reason to return and exchange, and 90 days return in full if there is a quality problem, so that you have no worries to purchase.