Zowaysoon 10KN Quickdraw Carabiner D-ring Locking Keychain for Hammock Camping Ourdoor 4 Pack 1. Light, multifunctional and hardy. Slim and compact but large enough for most uses.Very easy to clip. It's compact size makes for a great racking biner, use these for lashing gear when you are hiking or backpacking, for hammock suspension, and for hanging gear while camping(Blak or bule color, randomly sent !) 2. (Size: 7.8*4.4cm)It's light weight makes for a light set of draws, well suited for long sport routes or ultralight alpine racks 3. (Weight: 18g)Used this as an accessory to an outdoor back pack to hold anything with a string or loop. Worked with everything from a sleeping pillow to multiple heavy Nalgene bottles. 4.The spring action comes from the offset mounting points of the gate so it is simple and dependable 5.(Aluminum alloy material)You can replace your heavy aluminum carabiner's on your hammock with these, great for hooking your dog to various places, strap things to your bag, nice for keychain.