Highland Reeds / Achiltibuie bagpipe drone moisture control system designed by Bruce Hitchings.
This system has both moisture control plus you can add or remove the drone valves.
The moisture control system has never been used but I did use the drone valves for a year or so in my band pipes.
Excellent light weight system.
From the Henderson web site:
In addition to being highly effective, the Highland Reeds system stands out as convertible and compact. This drone moisture control system comes with a desiccant cartridge for each drone, screw-adjustable drone valves, and flexible rubber connectors for drone stocks. When used as a whole, the system reduces the amount of moisture reaching the drone reeds and simultaneously regulates airflow to the reeds. So you get improved stability and cleaner stops and starts. You can choose to use only the drone valves or only the moisture control components, and you have the option to insall with the rubber connectors or with hemp.
Features of the Highland Reeds Drone Moisture Control System:
Keeps drone reeds stable and dry, so you can play longer
Installs in drone stocks
Convertible and customizable
Silicon granules
More consistent air pressure
Removable drone valves
Easy to install and maintain
Includes 3 rubber connectors, 3 cartridges, drone valves, and valve removal/replacement key
Note: A zippered pipe bag is required for installation
Will ship but buyer pays actual shipping costs.