This staple works well except that the sound is very brash. This is easily cured in two possible ways. The first is to sweat on adhesive shrink wrap 8mm to the mid-section of the staple. The second method, and simplest is to wind the thread tightly all the way down to just short of the inboard rubber seal. Then seal the lower half of the wound section, i.e. below the reed itself, with PVA glue.