Wide function Great for outdoor activity, camping, fishing, hiking, traveling, keychain, fall protection system, anchor setting, rappel, climbing, rescue and so on. Easy to use A simple twist the barrel and push against the spring load will open the device. Automatic re-locking when you release the pressure. Avoid accidents that you may forget to close it when you climbing, especially for a novice, it is a better choice when you are learning. Safer and more convenient to work. Dimension: H:4.21", W:2.56"(widest point), 1.77"(narrowest point) Gate opening:0.78"/19.8mm Material: Aerospace grade Aluminum/7075 Aluminum Standard Finish: Rust-Free Weight: 7.5oz (3pcs) Carabiners: 3pcs The Keylock nose design prevents snagging. Pear Shaped Design, Hold the maximum strength than other shapes at the same size Tensile Force: 5160lbs Max. (Gravity Tensile Strength Testing) Provides a one hand approach to locking, with a 2-way automatic lock mechanical Space more saving Enjoy your outdoor time Just hang it on a mountaineering bag Great choice for Abseiling, tree climbing, hiking outdoor movements Rust free though it is used outdoor during rain or snow. Automatic re-locking when you release the pressure, double safety Don't worry about getting blood blisters or scratching themselves Connect parts of an anchor system like Ceiling Anchor, Great for Suspension Straps, Climbing rope, Body Weight Strength Training Systems, Yoga Swings, Boxing Equipment.