Excellent Jazz model, rounded rim contour. Comparison - VB12C.

• Cup Diameter = 25.50mm
• Overall Diameter = 37.92mm
• Rim Width = 6.71mm
• Bore = 6.10mm Back Bore = V-type

Jazz and alto trombone. Even tone quality in all registers. Commparison - VB old 11C: Schilke M.

• Cup Diameter = 25.00mm
• Overall Diameter = 37.92mm
• Rim Width = 6.46mm
• Bore = 6.240mm
• Back Bore = medium

Perfect mouthpiece for beginners.

• Cup diameter 25.00mm
• Overall diameter 37.92mm
• Rim width 6.46mm
• Bore 6.66mm
• Back bore = V-type

Small but sonorous for very good high register.

• Cup Diameter = 25.00mm
• Overall Diameter = 37.92mm
• Rim Width = 6.46mm
• Bore = 6.66mm
• Back Bore = V-type
  
  

Super efficient, fantastic high range. Comparison - VB6 1/2A:Schilke47. DW better all round.

• Cup Diameter = 25.40mm
• Overall Diameter = 37.92mm
• Rim Width = 6.26mm
• Bore = 6.24mm
• Back Bore = Medium
  

All round best seller as above.Cup diameter 25.40mm

• Cup Diameter = 25.40mm
• Overall Diameter = 37.92mm
• Rim Width = 6.26mm
• Bore = 6.66mm
• Back Bore = V-type

All round best seller, good in all registers.

• Cup Diameter = 25.40mm
• Overall Diameter = 37.92mm
• Rim Width = 6.26mm
• Bore = 6.66mm
• Back Bore = V-type
  

Large bore trombone. All-round best seller. Good in all registers.

Gives medium bore trombone the qualities of a large bore.

• Cup Diameter = 25.73mm
• Overall Diameter = 39mm
• Rim Width = 6.64mm
• Bore = 6.87mm
• Back Bore = Barrell medium 
  
  

Brilliant but solid high register.

• Cup Diameter = 25.73mm
• Overall Diameter = 39mm
• Rim Width = 6.64mm
• Bore = 6.87mm
• Back Bore = Barrel medium 

Favourite symphonic tromone like 5AL with modified backbore.

• Cup Diameter = 25.73mm
• Overall Diameter = 39mm
• Rim Width = 6.64mm
• Bore = 7.30mm
• Back Bore = Barrell medium

Dark and rich sonority for symphonic trombonists.

• Cup Diameter = 25.85mm
• Overall Diameter = 39.44mm
• Rim Width = 6.8mm
• Bore = 7.24mm
• Back Bore = Barrell

For well developed embouchures that need a large cup on small bore trombones.

• Cup Diameter = 25.9mm
• Overall Diameter = 39.4mm
• Rim Width = 6.77mm
• Bore = 7.13mm
• Back Bore = Barrel medium

Brilliant but solid high register.

• Cup Diameter = 25.9mm
• Overall Diameter = 39.44mm
• Rim Width = 6.77mm
• Bore = 7.13mm
• Back Bore = Barrel medium

The classic Euphonium model, also good for powerful trombonists.

• Cup Diameter = 26mm
• Overall Diameter = 39.44mm
• Rim Width = 6.72mm
• Bore = 7.38mm
• Back Bore = Barrel

Brilliant but solid high register.

• Cup Diameter = 25.9mm
• Overall Diameter = 39.44mm
• Rim Width = 6.77mm
• Bore = 7.13mm
• Back Bore = Barrel medium
  

Wider rim and easy response for young bass trombonists. Excellent for strong euphonium players.

• Cup Diameter = 26.4mm
• Overall Diameter = 40mm
• Rim Width = 6.8mm
• Bore = 7.38mm
• Back Bore = Barrel
  

Narrower rim with excellent flexibility and easy high and low registers.

• Cup Diameter = 27.00mm
• Overall Diameter = 39.30mm
• Rim Width = 6.15mm
• Bore = 7.40mm
• Back Bore = barrel

Wide rim and clear traditional bass.

• Cup Diameter = 27.00mm
• Overall Diameter = 40.46mm
• Rim Width = 6.73mm
• Bore = 7.24mm
•  Back Bore = barrel

Narrower rim with excellent flexibility and easy high and low registers.

• Cup Diameter = 27.11mm
• Overall Diameter = 39.30mm
• Rim Width = 6.09mm
• Bore = 7.45mm
• Back Bore = barrel

Super large for strong advanced players.

• Cup Diameter = 27.40mm
• Overall Diameter = 39.60mm
• Rim Width = 6.09mm
• Bore = 7.45mm
• Back Bore = Barrel

• Cup Diameter = 28.00mm
• Overall Diameter = 39.70mm
• Rim Width = 6.09mm
• Bore = 8.20mm
• Back Bore = Barrel