Receiver Diameter Trumpet 0,43 inch - 109 MM

SIZE DIAMETER THROAT DEPTH
1C .68 XL Deep
1-1/2C .67 L Medium-deep
3C .67 L Medium
5C .66 M Medium
7C .65 S Medium-shallow
SCREAMER .63 S Shallow

1C - Our deepest & largest throat diameter!
1-1/2C - For professional Trumpet players!
3C - KELLY's version has a slightly larger throat diameter for richer tone!
5C - Patterned after the bach series!
7C - standard
SCREAMER - Our shallowest cup - Perfect for Lead-Trumpet!