Look at the middle shaft and T-head of the racket, and I will give you an example. Like this one, the middle shaft has the words ArcSaber 10. This racket is one of the artifacts, the Bow and Arrow 10, also known as the Bow 10.

The position where the middle shaft connects to the racket frame is called T. The symbol of the head is especially The brand symbol of the Knicks, the abbreviation of Yonex is yy