Tenor Trombone Mouthpieces (Small Bore):

 All Stock Tenor Mouthpieces feature a Medium Shallow Cup Depth paired with a Medium Wide Rim.  Can also be used for Alto Trombone.

Model: 3C Cup Diameter: 26.4mm, 1.040" Bore: 'A', .234"

Model: 3.5C Cup Diameter: 26.25mm, 1.034"Bore: 'A', .234" 

Model: 4C Cup Diameter: 26.1mm 1.032" Bore: 'A', .234"

Model: 4.5C Cup Diameter: 25.95mm 1.022" Bore: 'A', .234"

Model: 5C Cup Diameter: 25.8mm 1.016" Bore: 'A', .234"

Model: 6C Cup Diameter: 25.4mm 1.00" Bore: 'A', .234"

Model: 7C Cup Diameter: 25mm  63/64" Bore: '#1', .228"

Model: 9C Cup Diameter: 24.85mm, .977" Bore: '#1', .228"

Model: 11C Cup Diameter: 24.7mm  31/32" Bore: '#1', .228"

Model: 12C Cup Diameter: 24.5mm  31/32" Bore: '#1', .228"

Please Note:
Tenor Trombone mouthpieces are available in three weights: Light, Regular and Medium.