Butterfly Trainer Training Tool is a black or silver colored, manual opening, lever lock type knife made of metal with a dull blade edge. It has a blade range of 2.76 - 4 inches and is designed for ambidextrous use. The handle is also made of metal and the knife is an original Miniduino product from China. The model is a Butterfly training tool and it comes with one blade. The knife is a collectible and is categorized under Collectibles, Knives, Swords & Blades, Collectible Folding Knives, Modern Folding Knives, and Factory Manufactured. Shipping is free in the USA.