<br>What's more cool is that watching an expert flip that blade around and seeing why it's called a butterfly? But learning to use a butterfly can be a dangerous and even painful experience. Now, here's your opportunity to learn to manipulate a butterfly without all the blood and bandages. <br> <br>This knife has a dull-edged black finished blade with weight reducing cut-outs.The blade is not sharp and it cannot be sharpened due to the design.<br> <br>The handles feature pin and channel constructure and look extra thick.But they are skeletonized designed to reduce weight.So they are not too much heavy ,have a good feel in the hand, and won't slip.<br> <br>This trainer includes a durable tail latch for holding the knife open, or securely locking it closed.<br> <br>Out of the box it might be a bit stiff, but after about a day of flipping it'll open with ease.<br><br><b>NOTE:</b><br><b>If you are new to flipping a knife,we would suggest practicing your flipping tricks by standing facing towards a bed,a sofa, on a carpet or lawn to avoid damage.</b><br><b>If you get defective one accidentally,please contact us via amazon to make replacement.</b>