The Mr. Hard Water Knuckler™ Hand Scrubbing Tool saves your knuckles from those "gotch-ya's" that always come when you’re cleaning and scrubbing!  It also fits in the Mr. Hard Water Knuckler™ Belt Pouch which is water-resistant and accommodates any size work belt or belt loop. The Knuckler™ is a re-useable, durable, tough scrubbing block that saves your knuckles when scrubbing!  It’s great for cleaning edges, flat, or curved surfaces.  Mr. Hard Water™ Gold or Silver Knuckler™ Cleaning Pads fit snugly on the Knuckler™ and are easily changed out.