**All brass items are NON-RETURNABLE**
Please Note: This cup requires a screw rim to be a complete mouthpiece.
The SF 16-E-2 in brass/silver is available on a limited basis. The #16 bore (4.5mm) offers a bit more resistance than the standard #14 (4.6mm) and a bit more facility in the upper range.
Giardinelli threads are standard.