Just like a switch blade. With the press of the button, the blade flips open. Designed to look and behave just like a Switch Blade but be safe like a bottle opener. Perfect for bartenders, knife enthusiast or if you just like to BBQ. Works for both screw type and pop top bottles. So, switch open your Caliber Gourmet Switch Blade Style Bottle Opener and with the flick of a button, impress your friends and be the life of the party.