The V3 Drier Moisture Control System regulates pressure, provides full and vibrant drone tone, with full volume and rich harmonics. The system’s dryer canister controls and reduces moisture to the reeds, while three Stainless Steel spring valves enable solid strike-in and clean stops without any trailing drones. Developed and tested by five-time world championship-winning Pipe Major Robert Mathieson to be compatible with all drone reeds and pipe bags. Stocks not included.