The Weril GG282 Gagliardi II Professional F Attachment Trombone features a .547-inch bore with 4 interchangable leadpipes to customize the performance needs of any player. The GG282 also features an 8.5-inch one-piece gold brass bell for a warm sound plus an open wrap F Attachment for less resistance. The Weril GG282 Gagliardi II Professional F Attachment Trombone includes a case and mouthpiece and is available in lacquer (GG282) finish.