This product allows drones to lower on the tuning pin. This will help you attain better control and better overall sound. The extenders go into the reed seat and are easily installed. Please note, these are not useful on every set of pipes. Most pipes tune properly, and there are not necessary, but if your drones constantly tune too high on the tuning pins, then this is a product to solve that situation and give you the sound and control you are looking for.
Comes in a pack of three.