Description: ATC belay device is made of aluminum alloy, durable, lightweight, high strength, versatile, small pocket size, portable, convenient to carry Guide mode works with one or two climbers descending Double slot rope holes, big one is used for connecting carabiner lock, anchor, as top protector, small one is used to hang webbing strap rope, adjust the friction for better performance, and ventilation hole to protect the device Suitable for ropes from 8mm to 13mm, max. Tension: 25KN Small hardware tool for mountaineering, rock climbing, rescue, tree arborist, caving, rappelling, downhill, lowering, rescue, descending, abseiling, and other outdoor activities Specification: Material: Aluminum Alloy Size (L x W x H): Approx. 120x94x36mm / 4.7x3.7x1.4 inch Package Includes: 1 Piece ATC Belay Device Note: Please allow slight size deviation and color difference. Please NOTE that our product is the belay only, others like rope or carabiner is NOT included