This superior invention is a MUST HAVE for all car buffs! It fits perfectly in the bottom of our Wash Bucket and is proven to reduce the amount of dirt that is transferred from your wash water, keeping your wash water CLEAN...SCRATCH-FREE CLEAN! When you dunk our SchMITTy Wash Mitt in the bucket, drag it across the grid to remove any dirt, grit, and grime that has collected in the mitt. The Grit Guard's unique radical surface design extracts particles and contaminants from your mitt and brushes and traps particles below the grid to prevent the transfer of dirt back to the car's finish. (This product can be placed in the bottom of any 12" diameter bucket.)