Posted by Dennis Hale on October 11, 2001 at 14:07:04:
In Reply to: Re: Re: Conn Helleberg (Original,7B)? posted by Yup on October 10, 2001 at 19:10:59:
I have both of these mouthpieces and your measurements are the same as what I get.
Conn Helleberg Dia. about 1.900 inch
Conn Helleberg 7B Dia. about 1.250 inch