This is the PM7X, a pickup mute compatible with Yamaha's latest Silent Brass SB7J. It's known for its natural playing feel, making it suitable for warm-ups before performances and backstage sound checks. It's recommended for those looking for a practice mute or considering one for comparison. This listing is for the PM7X body only. The SB7J and other cables are not included. The rubber on the base (the part that goes into the bell) is missing due to aging, but this does not affect playing. Please check the images for the current condition of the item.