Protech Magic automatic trick opening scale relase knife. The Pro-Tech Knives Magic Mike "Whiskers" Allen design is a very covert automatic mechanism with no push button. The Magic is a scale release knife in which the handles pivot at the back to fire and unlock the 3.5" blade. You must hold the knife in the right hand, wrapping your middle finger around the bottom scale and pocket clip for a good grip on the knife and the bottom of the top handle scale slides forward (away from your palm) with the thrust of your thumb. Once you get the hang of this knife, you'll love it. It's like....Magic! This knife opens with fantastic automatic action!