Curry TF mouthpieces are trumpet mouthpieces incorporating the depth of sound you get on a flugel piece without the excess cup volume that makes those style mouthpieces difficult to play. It is in tune to high C and above, yet you can play softly and firmly in the low register. Perfect for soft orchestral passages, intimate jazz settings, or for just "working out." T he cup is roughly 1/3 concave (trumpet-like) and 2/3 convex (flugel-like) with a special backbore and a .153" (3.89mm) bore.