In configuring the Bach LR180S-43 Anniversary Custom Stradivarius Trumpet we've put together some of the most popular custom options for this perennial favorite: key of Bb, lightweight body, .459"" medium-large bore, 43 bell, 25LR (reverse) mouthpipe, Monel valves, silver-plated finish, gold-plated inside bell, gold-plated trim, anniversary pattern engraving. Please Note: All Bach trumpets and cornets come with 1st valve slide hook, 3rd valve slide ring, case, and mouthpiece, unless otherwise specified.Key: Bb Bore: .459-inch Leadpipe: 25LR Reverse Leadpipe Material: Yellow Brass Bell: 4-13/16-inch One-Piece Hand Hammered Standard Weight 43 Taper with Anniversary Engraving and Gold Plated Interior Bell Wash Bell Material: Yellow Brass Valves: Monel Pistons 1st Valve Slide Adjustment: Thumb Saddle 3rd Valve Slide Adjustment: Fixed Ring Features: Lightweight Body; Standard Weight 43 Taper One-Piece Hand Hammered Bell; Monel Valves; 25LR Reverse Leadpipe; Gold Plated Trim and Gold Interior Bell Wash; Anniversary Pattern Engraving Case: Yes Mouthpiece: Yes Finish: Silver with Anniversary Pattern Engraving Plus Gold Plated Trim and Interior Bell Wash