Standard Series, Short Shank

Yamaha Model No.	Approximate Size Equivalent
7D4d	Denis Wick S
8D2	Denis Wick S, larger rim diameter
9E	Denis Wick 5
11C4	Bach 7C
11E4	Denis Wick 4B
13E4	Denis Wick 4
14E	Denis Wick 3. deep U cup
16E	Denis Wick 2, deep U cup

Standard Series, Long Shank

Yamaha Model No.	Approximate Size Equivalent
7A4	Denis Wick S
9C4	Bach 7C, smaller rim diameter
11C4	Bach 7C, Giardinelli 7C
13B4	Bach 6C
14B4	Bach 3C, Schilke 15B
15C4	Bach 2C
16C4	Bach 1-1/2C
17C4	Bach 1C

GP Series, Short Shank

Yamaha Model No.	Approximate Size Equivalent
14E	Denis Wick 3, deep U cup