I've had this for many years, locally made, it's a garden sprinkler inside a housing, a drain hole, and a couple of adapters for different size drums. Put a container underneath, pull the trigger and all the dust gets washed off into the drain tray. You can air dry or blow dry. We used it nearly everyday in my shop, but have hardly used it for the last decade as it doesn't fit larger drum sizes...and you need water supply inside the shop. I had a look at the rear brakes on my wife's Nissan Expert yesterday, and dragged it out....works great.