The rim used on Schmid Digital mouthpieces is completely different from the standard rim. It's medium width with a pronounced reverse peak. All Schmid Digital rims use metric (800-36) threads.

Rim Width: Medium, 3.99mm/.157"

Contour: Semi-flat with reverse peak.

ID @.050"
17mm (17.17mm/.676")
175mm (17.22mm/678")
18mm (17.72mm/.698")

Schmid Digital Mouthpieces
Cups 1-3.5 and 7-9.5 use 17.5mm
Cups 1-3.5 and 10-12.5 use 18mm

Made in the USA.