This is a stainless steel balisong (butterfly knife) training blade. It can used to retrofit many existing butterfly knives to create a safe flipping option. Unlike the sharpened blade that comes standard on many balisongs, this trainer blade offers similar weight, yet does not have a dangerous point and is not sharpened on the edges. With this blade, you can practice your flipping without worry of being injured.
Note: The replacement blade come as seen in this picture. There is no additional hardware or parts provided.