The Hills Pump Dry Pac Refill Sachet.

The Patented Hill Dry-Pac System Removes around 90% of moisture from the air going into your gun, giving you clean, dry air to protect your gun.

Now includes our updated Colour Changing Dry-Pac system. The beads in the medium will now gradually change colour from Orange to Green as they absorb moisture to indicate that they need to be changed for a fresh sachet.

Suitable for Hills MK4, MK5 and Umarex PCP pump.

Refill sachet only. Hill Pump and Dry Pak Kit not included. Available separately.