The gradual butterfly knife is different from the gradual change of other knives. Due to the special shape of the knife, there is a branch of the tamarind butterfly besides the ordinary big purple-headed full-color butterfly. The resolution of gradient color is that the red edge of the knife foot has reached the root of the knife.

Tiger teeth are tusks, commonly known as tiger teeth because of their appearance. In the conventional tooth classification, according to the shape and function of teeth, they can be divided into incisors, canines, premolars and molars, and the chewing functions of all kinds of teeth are different.