Hi i picked up a H&B stoned lined symphonic straight mute as part of an ebay sale (red and white) not sure if it is a trumpet mute as it is a differeant size to a meatal finished H&B stone lined symphonic mute i have. Can someone please check the size of their mutes, my feeling is that the metal finished one may be for a flugel? as it is bigger. The red and white one is 6,1/4 inches long by 3 inches diameter at its greatest width, 5/8ths at the top. The metal finished mute is 6 inches long by 3,3/4 inches diameter at its greatest width, and is 78ths at the top.