Reed Absorbs - absorb moisture or saliva that collects at the bottom of the reed in your practice chanter. Can be used in practice chanters and pipes with polypenco stocks where moisture is a problem. Packs of 12 Absorbent disks per package. Most people will notice that on hemped part of the practice chanter, that there is usually a buildup of moisture after playing. This will help collect a large part of that moisture.