Schilke Silver Plated Large Shank Trombone Mouthpieces. Available in various sizes and specifications.
44E4 - Though a small cup diameter, this mouthpiece offers a very deep "E" cup and semi-flat #4 rim.
46 - Slightly larger than the 45, this is also a good beginner's mouthpiece.
46D - The cup diameter and volume is slightly larger than the 46, producing a full, resonant tone. Also recommended for the younger baritone/euphoni...