YONEX Badminton Racket Muscle Power 9LT (with strings). Purchased one year ago and used for 3 months. After that, I bought another racket, so it has been stored at home. There are three paint chips on the frame top, but it's quite clean. See photos 7, 8, and 9. I think it's also good as a second racket for backup. Brand: YONEX (Yonex) Accessories: Racket case Racket color: White/Navy Grip size: 4U5 String tension: 21 Will be wrapped in bubble wrap and shipped. Shipped via Rakuraku Mercari (anonymous shipping) The following is from the YONEX HP: Muscle Power Frame A shape that raises the grommets and integrates the frame and strings. Reduces energy loss and achieves fast shots. Built-in T-Joint By incorporating a T-joint, it is resistant to twisting and improves face stability. Aero + Box Shape Aero shape for quick swing-through and box shape for storing power are used in appropriate places. Isometric Isometric is YONEX's unique shape theory that expands the sweet area. By bringing the lengths of the vertical and horizontal strings closer to equal, a sweet area wider up, down, left, and right is achieved compared to a general circular frame. Since 1992 in badminton, it has been loved by the world's top players, has won numerous titles, and continues to evolve. Muscle Power Frame A shape that raises the grommets and integrates the frame and strings. Reduces energy loss and achieves fast shots. Built-in T-Joint By incorporating a T-joint, it is resistant to twisting and improves face stability. Aero + Box Shape Aero shape for quick swing-through and box shape for storing power are used in appropriate places.