The DW/Paxman range of mouthpieces has been developed with LSO principal horn Tim Jones, and uses the ideas underlying the Denis Wick Heritage range. This principle is based on a late 19th century design, where the cup wall is very thin near the mouthpiece rim, combined with the new idea to have substantially more mass lower down the cup. The results are amazing. The mouthpieces have an immediate, easy response, particularly in the high register, a smooth legato and a sound rich in overtones over the whole range. The 4, with a cup diameter of 18.00mm, gives a rich sound and a great dynamic range whilst maintaining focus. This size is very popular with orchestral horn players and soloists alike, and gives a rich, vibrant sound of unmatched beauty. Cup Diameter: 18.00mm Rim width: 4.30mm Bore: 4.70mm Backbore: V-type