The Bach LR180S-43 Stradivarius Professional Trumpet is tuned to the key of Bb. It has a portable lightweight body, .459" medium-large bore, 43 bell, 25LR (reverse) leadpipe, Monel trumpet valves, and a silver-plated finish. Please Note: All Bach trumpets and cornets come with 1st valve slide hook, 3rd valve slide ring, case, and mouthpiece, unless otherwise specified.