Bottle Popping Balisong Training BLACK Butterfly Bottle Opener Bottle Popping Balisong Training BLACK Butterfly 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 Training BLACK Butterfly Bottle Opener 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 black anodized 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 Coated Black, Identical to a Balisong Butterfly Handle: Stainless Steel, Satin Black Finish Other Features: Tail End Lock Finish: Satin Metal, Black Color w Silver Lock