The User Manual
1_ Before applying the patch, clean the space under your thumb rest on the body of your instrument.
2_ Remove the liner -with blue print- from one side of the patch.
3_ Align the patch at the back of the “EWC”.
4_ Remove the liner from the other side of the patch.
5_ Align the “EWC” right under the thumb rest, onto the body of the instrument, pyramid at the bottom side.
6_ Press the “EWC” on the clarinet in such a way that air cannot enter.
7_ Adjust the position of the upstanding pyramid to your thump using the screw on top of the pyramid.