Product Name: XO Trombone Mouthpipe (Interlock/Genuine) The photo appears to be brass, but it is made of silver. This is a genuine mouthpipe for XO (X.O.) trombones. I used it for buzzing practice. I am selling it to organize my belongings. [Specifications] Manufacturer: XO Type: Interlock system (screw-in type) Material: Silver Compatibility: Compatible with XO screw-in models such as 1236 and 1240 series [Condition] Used, so there are some scratches from use, but there are no major dents or stripped threads that would interfere with playing. The inside of the pipe has been cleaned. XO pipes are a little difficult to obtain individually, so how about one for a spare or replacement? I will wrap it in bubble wrap and ship it carefully. #Trombone #XO #X.O. #Mouthpipe #Leadpipe #WindInstrument #ConcertBand #InstrumentParts