The MANTIS Original, the keychain knife that started the craze. This perfect little dynamo provides all of the essentials, right when you'll need them. A blade, a bulb, and a bottle opener, right on your keys! Unlike some of the small LED bulbs on the market, we designed the B-3 to allow for replacement batteries. Just one of the many great benefits that MANTIS brings to the industry. The blade is 1” long, and the whole unit is just a little bit larger than a quarter. Specifications: - Overall Length 2 1/4" - Blade Length 1" - Blade Material 420HC - Blade Style Spear Point - Handle Material Polymer - Lock Style Slip Joint - Carry System Key Chain Ring - Weight 1.5 oz. - Special Features: LED Light, Bottle Opener, Key Chain Ring