The TacKnives OTF Double-Action Safety Knife is one of the lightest automatics on the market. At only 2.19 ozs, you won't even notice that it's in your pocket. The black, high-end handle is extremely lightweight but that doesn't mean that it's not as tough as nails and the slimline design is comfortable in the hand. Also as tough as nails, the blade itself has a 60HRC, which comes from its vacuum, heat-treated D2 steel construction. For ease of carry, the double-action automatic has a sturdy, titanium alloy pocket clip.