John Packer JP131R Bb Tenor TromboneWe say: The John Packer range of woodwind and brass instruments is part of our portfolio of instruments for AIMS members. This entry level trombone is ideal for any student beginning their brass playing career who would like a larger bore instrument. John Packer say: The JP131R Dual Bore Bb Trombone is ideal for a player who is looking to make a smooth transition from a medium bore to a larger bore trombone. Well engineered and with just the right