This lightweight, colorful aluminum carabiner features the Nite-Ize innovative slide-to-lock mechanism on the gate, making it a secure way to carry and connect items, while its low-profile rectangular cross-section body design lets it slide comfortably into a pocket. Choose from 3 sizes: #2 (1.1 x 1.7 x .4) holds 10 lbs., #3 (1.5 x 2.3 x .4) holds 25 lbs., or #4 (2 x 3.2 x .6) holds 75 lbs.