This lightweight, colorful aluminum carabiner features an innovative slide-to-lock mechanism on the gate to keep your items secure. Available in a variety of sizes and colors, it can connect, hold, or carry anything from keys to water bottles to gear. Lightweight and strong Solid aluminum body construction Stainless steel gate with slide-to-lock mechanism Size #4: Dimensions: 2" x 3.2" x.6" 52mm x 81mm x 15mm Weight.6oz 17g Weight Rating: 75lb 34kg.