| Standard   Series |  |  |  | 
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics | 
| TR-5A4 | 15.9 | 3.65 | Extremely small inner rim   diameter. Flat and wide. Small cup volume. Ideal for lead trumpet. | 
| TR-6A4a | 15.9 | 3.65 | Very shallow cup for easy high   notes. Good for big-band type lead trumpet. | 
| TR-7A4 | 16.24 | 3.65 | Relatively small inner rim   diameter, but still flexible. Perfect for piccolo or lead trumpet. | 
| TR-7B4 | 16.08 | 3.72 | Relatively large throat diameter   with a sharp shoulder. Bright sound with easy high notes. | 
| TR-8C4 | 16.19 | 3.65 | Good for all-around playing,   including solos. Combines an extended high range with rich lows. | 
| TR-9C4 | 16.28 | 3.65 | Somewhere            between the 8C4 and   11C4, affording easy playability over a      wide       range. Well-defined rim bite for   easy blowing and   extended       endurance. | 
| TR-11A4 | 16.46 | 3.65 | Medium rim diameter with a   shallow cup for easy high notes. Ideal for piccolo trumpet and jazz idioms. | 
| TR-11A5 | 16.38 | 3.65 | Wide rim shallow cup with a   slightly large back bore delivers a rich upper range with ease. Well-suited   for piccolo trumpet. | 
| TR-11B4 | 16.46 | 3.65 | A somewhat shallow cup and   medium rim for extra endurance. Brilliant tone. Suitable for D, Eb, and   piccolo trumpets. | 
| TR-11 | 16.32 | 3.72 | Relatively            large throat with a   sharp shoulder. Easy to play over the      entire       range, with a fairly bright   sound. Good for beginners. | 
| TR-11C4 | 16.46 | 3.65 | Clean bite and well-balanced rim   for all-around playing. Standard model for beginners and advanced players. | 
| TR-13A4a | 16.2 | 3.65 | Relatively flat rim with a   shallow cup for fast response. Ideal for piccolo and lead trumpet. | 
| TR-13B4 | 16.63 | 3.65 | Superb clarity for large   ensembles and orchestras. Well-matched to C trumpets. Powerful sound. | 
| TR-13C4 | 16.5 | 3.65 | Medium rim diameter and cup   volume for allaround playing. Good for ensembles and orchestras. Fairly dark   sound. | 
| TR-13D4 | 16.68 | 3.65 | Fairly deep cup with rich,   mellow tone. A dark sound that is ideal for orchestra players. | 
| TR-14A4a | 16.68 | 3.65 | Fast-response high range and   powerful sound. Ideal for piccolo or lead trumpet. | 
| TR-14B4 | 16.85 | 3.65 | Relatively large rim diameter   and shallow cup. Outstanding overall balance for all musical genres. | 
| TR-14C4 | 16.88 | 3.65 | Rim designed for outstanding   facility and flexibility. Popular in ensembles and orchestras. Can produce   high volume. | 
| TR-14D4 | 16.8 | 3.65 | A fairly deep cup with a medium   rim. Rich, somewhat dark tone. Well suited to orchestral playing. | 
| TR-14E4 | 16.84 | 3.88 | The 14B4 rim with a unique cup   for a soft tone. For rotary trumpets. Large backbore and throat. | 
| TR-15B4 | 16.96 | 3.65 | Fairly large rim diameter with a   shallower cup than the 15C4. Outstanding flexibility. Suits Bb, C, D, and Eb   trumpets. | 
| TR-15C4 | 16.98 | 3.65 | Clean rim bite with a standard   U-shaped cup. Bright, powerful tone. For advanced players. | 
| TR-15E4 | 16.92 | 3.88 | Rim designed for outstanding   facility and flexibility. For rotary trumpets. Between the 14E4 and 16E4 in   size. | 
| TR-16C4 | 17 | 3.65 | Large rim and medium cup for   easy playability over a wide range. High volume. Excellent for symphony   orchestra players. | 
| TR-16D | 17.14 | 3.65 | A deeper cup than the 16C4. Soft   tone. Mellow-but-solid sound that is ideal for orchestras. | 
| TR-16E4 | 17.14 | 3.88 | The 16C4 rim with a unique deep   cup. Heavy tone. For rotary trumpets. Maximum inner rim diameter. | 
| TR-17B4 | 17.3 | 3.65 | A good combination of large rim   and relatively shallow cup. Powerful sound. A good choice for orchestra   first-chair players. | 
| TR-17C4 | 17.3 | 3.65 | Deeper cup than the 17B4.   Powerful, dark sound. A popular choice with symphony orchestra players. | 
| TR-17D4 | 17.3 | 3.65 | An            even deeper cup than the 17C4   for an exceptionally dark,    heavy       tone.   Good for symphony orchestra players   who prefer a    mellow    sound. | 
| TR-18C4 | 17.42 | 3.65 | High volume with an   exceptionally large inner rim diameter and deep cup. For advanced orchestra   players. | 
| GP Series |  |  |  | 
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics | 
| TR-7A4-GP | 16.24 | 3.65 | Relatively small inner rim   diameter, but still flexible. Perfect for piccolo or lead trumpet. | 
| TR-8C4-GP | 16.19 | 3.65 | Good for all-around playing,   including solos. Combines an extended high range with rich lows. | 
| TR-11B4-GP | 16.46 | 3.65 | A somewhat shallow cup and   medium rim for extra endurance. Brilliant tone. Suitable for D, Eb, and   piccolo trumpets. | 
| TR-14A4a-GP | 16.68 | 3.65 | Fast-response high range and   powerful sound. Ideal for piccolo or lead trumpet. | 
| TR-14B4-GP | 16.85 | 3.65 | Relatively large rim diameter   and shallow cup. Outstanding overall balance for all musical genres. | 
| TR-14C4-GP | 16.88 | 3.65 | Rim designed for outstanding   facility and flexibility. Popular in ensembles and orchestras. Can produce   high volume. | 
| TR-16C4-GP | 17 | 3.65 | Large rim and medium cup for   easy playability over a wide range. High volume. Excellent for symphony   orchestra players. | 
| TR-17C4-GP | 17.3 | 3.65 | Powerful, dark sound. A popular   choice with symphony orchestra players. | 
|  |  |  |  | 
| Silver 925 Series |  |  |  | 
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics | 
| TR-7A4-ST | 16.24 | 3.65 | Relatively small inner rim   diameter, but still flexible. Perfect for piccolo or lead trumpet. | 
| TR-11B4-ST | 16.46 | 3.65 | A somewhat shallow cup and   medium rim for extra endurance. Brilliant tone. Suitable for D, Eb, and   piccolo trumpets. | 
| TR-14A4a-ST | 16.68 | 3.65 | Fast-response high range and   powerful sound. Ideal for piccolo or lead trumpet. | 
| TR-14B4-ST | 16.85 | 3.65 | Relatively large rim diameter   and shallow cup. Outstanding overall balance for all musical genres. | 
| TR-16C4-ST | 17 | 3.65 | Large rim and medium cup for   easy playability over a wide range. High volume. Excellent for symphony   orchestra players. | 
| Signature Series |  |  |  | 
| Model No. | Rim Inner Diameter (mm) | Throat (mm) | Characteristics | 
| TR-AUBIER | 17.03 | 3.8 | Powerful, full sound. An   allround model. | 
| TR-DAMROW | 16.98 | 3.88 | Full, resonant sound and a   responsive feel when played. For orchestral performers. | 
| TR-VIZZUTTI | 16.67 | 3.56 | The shallow cup with smooth   inner rim edge gives a clear focused sound and plays evenly in all registers. | 
| TR-VIZZUTTI-GP | 16.67 | 3.56 | The shallow cup with smooth   inner rim edge gives a clear focused sound and plays evenly in all registers. | 
| TR-GOULD | 17.3 | 3.88 | This            mouthpiece has been   designed for a big orchestral sound  with        enough    projection to fill a concert   hall. The wide  inner rim    size     and open    throat allow a warm broad sound even    at    fortissimo. | 
| TR-EM1 | 16.02 | 3.65 | Two cup sizes available.   Fatigue-free rim bite makes it ideal for lead trumpeters. | 
| TR-EM2 | 16.22 | 3.65 | Two cup sizes available.   Fatigue-free rim bite makes it ideal for lead trumpeters. | 
| TR-SHEW-LEAD | 16.54 | 3.56 | The Lead model gives that extra   sizzle and high note clarity for playing lead parts. | 
| TR-SHEW-JAZZ | 16.85 | 3.65 | The            Jazz model has a fairly deep   roomy cup for a warm, big   sound,     and  a     throat and backbore designed to give   enough   "jump and   snap"   for      maneuvering through quick jazz passages     with a rich   full   sound. |