This is a finger hook for the 3rd slide of instruments like trumpets. Please note that it is silver. Non-brand. The shape is almost the same as the one for YAMAHA trumpets (photo 2). It worked perfectly on my YTR-2321 at least. I will include the screws, but the screw diameter is different from YAMAHA's, so I don't think you'll be able to use them. To offer it at a low price, I will send it by regular mail, so there is no compensation. Please understand. Thank you for considering. 【Attention】 I will not accept purchases from those who cannot rate immediately after receiving the item. I may respond with a rating depending on the situation. However, this does not apply if you have explained the situation in advance. Thank you.