The Fox Renard Artist Model 330 is an instrument that combines the best of both worlds, with a solid grenadilla wood bell and lower joint coupled with a resin (plastic) upper joint. The instrument has ostanding tone, resonance, intonation and durability.It includes a third octave key, a low Bb vent, silver plated posts, bands, and keys, and teflon tipped stainless steel adjusting screws. The modified conservatory key system includes an Ab-Bb trill key, G#-A trill key, left hand F and of course a F resonance key mechanism. Also, C-D, B-C#, articulated C#, and low B-B# mechanisms are standard. -the manufacturer