Butterfly knife, also known as balisong, can be classified into trainer butterfly knife and real butterfly knife by its blade. The blade of trainer butterfly knife with a dull edge is perforated and fake while the blade of the real butterfly knife is sharp. Nabalis is committed to designing and manufacturing original and safe butterfly knives that are suitable for all kinds of butterfly knife tricks for bali-flippers. We have practice butterfly knives that range from bushing balisongs, washer balisongs and bearing balisongs with various materials such as titanium, 7075 and 6061 aluminum and the like. You can always get the perfect balisong here!