This is a used Universal Light model neck screw for saxophone by Shiba Neji, a pioneer in saxophone neck screws, with a GP finish and sapphire. It's for Selmer and Yanagisawa saxophones. Please note that it cannot be used with Yamaha saxophones, which have different thread pitches. I purchased this three years ago when it was released as a limited edition. In my personal impression, in addition to the rich resonance of the Shiba Neji Universal model, the addition of sapphire clarifies the sound's contours, resulting in a sharp and edgy tone. I think it can be used for both classical and jazz music. This is a valuable model that is no longer available. Please consider it. The items for sale are the screw itself and the case. It will be shipped via Takkyubin Compact. Please check the photos and purchase only if you are satisfied with the current condition.