4 tools in 1 - DoohicKey ClipKey Tool is a tool for everyone who likes to have the most necessary of them on hand. You can easily fit Microtool in your wallet or pocket or attach it to your keys. It was made of one piece of stainless steel. That is why one of its greatest strengths is endurance. The tools it contains are a serrated blade, a cardboard cutter, a bottle opener and a flat screwdriver.