From Denis Wick "Wick French horn mouthpieces challenge the notion that the French horn is difficult to play. With slight adjustments to the rim and cup, these mouthpieces are exceptionally more comfortable and flexible while providing a full, rich tone."
 
4 Deep Cup, 18mm cup diameter, 5mm rim width, 4.7mm bore
4N Deep Cup 18mm cup diameter, 3.93 mm rim width, 4.7mm bore
5 Shaped Funnel, 17.5mm cup diameter, 4.95 rim width, 4.6mm bore
6N More Rounded Cup, 17.25mm cup diameter, 3.88mm rim width, 4.5mm bore
7 Medium Cup, 17mm cup diameter, 4.5mm rim width, 4.5mm bore