* No offensive blade: this butterfly trainer is for learning how to use the thing without all the cuts and bruising to the hands; the unsharpened blade of our practice butterfly knife will keep you away from danger as a beginner * Gift for your friend: this is a gift one for your friend if they are a butterfly knives lover; they can practice without harmful * Durable: unlike the normal butterfly training, we use enhanced 440c stainless steel and enhanced screws to make sure it can last long till you get the hang of it and are able to move on to the thing * Balance: we calculate a weight balance of the butterfly knife trainer, 5,83 oz, 5″ blade and a center of mass to make sure you can flip it smoothly
