Bottle Popping Balisong Training Knife-styled Bottle Opener plus can opener tool. This is ideal for practicing your flipping safely and popping off bottle caps in the process. Imagine the look your friends will give you when they see you flip out this Bottle Popping Balisong and pop open a beer or soda cap. It is about 8.5 inches long when open and the stainless steel is heat treated along with having a satin hard coat finish. Specifications Overall Length: 8.4 Inches Opener Length: 3.65 Inches Opener Material: Heat Treated Stainless Steel Opener Thickness: 2.5mm Closed Length: 5.205 Inches Other Features: Satin Nitride Silver, Identical to a Balisong Butterfly Handle: Stainless Steel, Satin Finish Other Features: Tail End Lock Finish: Satin Metal, Silver Color