Practice Butterfly Knife Trainer With Spring Latch This training knife will be a godsend for beginners who do not have much experience with balisong butterfly trainer knife. This butterfly nife is made of 404 stainless steel. This steel resists corrosion well, is strong and has great hardness indicators that allow you use it for a very long period. Specifications: Material: 404 stainless steel Size: 9.5 Inches, 6Oz Color: Silver Package Included: 1x Butterfly Knife, 1x Protective sleeve IDEAL WEIGH AND LENGTH: The length of the knife is 9.5 Inches when it is open. Its weight is 6Oz. The parameters make it an ideal training tool both for kids and adults, for males and females. It can be carried in a pocket. EASY TO USE: The design of the knife does not involve any complex elements such as springs, buttons or complex latches. This means that you can use it whenever and wherever it is convenient for you without any extra effort. Moreover, it is so straightforward in use, that everyone can train literally for hours. PERFECT BALANCE: The weight of this training knife is thought over as much as possible so that the hand does not get tired during training. Also, thanks to the perfect balance, the use of the knife will be the smoothest for both beginners and intermediates.