Barely registering on scales at less than an ounce, the Metolius Full Strength Mini Carabiner is the lightest bona fide ’biner on the market. It’s so small, our tester couldn’t discern a difference between the Mini and a keychain carabiner.
The gate clearance accommodated his skinny 8.9-millimeter rope. The low weight makes it ideal for climbers who carry their racks over long miles. $8; metoliusclimbing.com