Thumb hook & Thumb rest: The Thumb Wizard The finger hook (thumb hook) increases the volume and allows for a wider range of expression across all registers. The thumb rest improves airflow throughout the entire range, reducing tonal variations. Currently, the new retail price is 29,700 yen. Purchased in 2020, this thumb hook, which is shorter in length due to my small hand size, is not suitable for fast passages, so I have kept it stored. There is a scratch on the second photo, which is not visible when attached to the instrument. It's a scratch from when it was installed. The Yany BooStar is almost unused. It wasn't suitable for the sound I was aiming for, so I'm selling it as a set. Yany BooStar / Un Plate - Current new price: 8,800 yen Instruments (compatible instruments): Soprano to Baritone Saxophones (universal) Material: Special metal / Un Plate, for Yanagisawa and Selmer "Yany BooStar" (patented), a neck screw that boosts resonance and produces a rich tone. By attaching it, a moderate resistance is created, and the airflow becomes smoother. The sound is unified across all registers, and a voluminous tone can be obtained!! You can also change the playing feel and sound quality with the combination patterns of the three screws, allowing you to use it according to the song or music scene. The Un Plate finish increases the sound conductivity, resulting in a richer tone than conventional screws!! The basic "Screw A" can be joined with two types of parts, "Joint Part B" and "Joint Part C," which have different weights, allowing for 3 patterns of customization. The playing feel and sound quality change further depending on the combination. You can use it widely, from soprano to baritone, according to the song or music scene. This is for Selmer. Please make sure that there is no problem when attaching it, as the structure of the screw part may differ depending on each saxophone manufacturer and instrument. - CAUTION - * This product is used for the neck joint. * Overtightening Screw A or turning the screw without attaching the neck may cause distortion in the neck joint, making it difficult to attach and detach the neck. * Be sure to attach the included Joint Parts B and C securely to Screw A. They may come off during performance.