This item was received directly from professional player Satoshi Iwabuchi at an event. It is a racket that Pro Iwabuchi had custom-made by the manufacturer. This racket is not commercially available. Therefore, there is no information about it, as it was made only for Pro Iwabuchi's use. This racket was used at the Busan Open. There are areas that are damaged due to aging. Please purchase with the understanding of the above. As it is a racket actually used by the player, it is heavier than commercially available ones. The exact weight is unknown. - Model Name: RDX500 - Brand: YONEX - Grip: White Grip This is a very valuable item.