Compressed felt/Mylar backed self adhesive windsaver valve for chromatic and diatonic harmonicas. Peel and stick! So simple, no glue required. Stays put! Will not absorb moisture! Will not jam up, will not flutter or slap. They are silent! Eliminates problems with windsavers sticking in cold weather! Price is for 1 windsaver valve. Rivet hole can be added upon request. These are precision cut and must be trimmed to the proper length after assembly. Video coming soon! Free shipping! Guaranteed to surpass your expectations!