Martin Seibold Tone Stability Enhancer TSE 7S
Martin Seibold Tone Stability Enhancer TSE 7S, Tone Stabiliser, For rotary valve trumpet and flugelhorn with a trigger on the 3rd valve, Improves response and accuracy, Makes the sound more centred, Unscrew the knurled screw completely out of the TSE, place the threaded part from the back against the valve sleeve and screw both parts together with the help of the knurled screw so that the TSE rests against both valve sleeves, Silver-plated, Made in Bavaria / Germany