MR. HARD WATER Knuckler™ Hand Tool MSRP: Now: $13.50 Was: Mr. Hard Water Add to Cart MR. HARDWATER Knuckler™ Hand Tool The Mr. Hard Water Knuckler™ Hand Scrubbing Tool is a re-useable, durable, tough scrubbing block that saves your knuckles when scrubbing! It’s great for cleaning edges, flat, or curved surfaces... MSRP: Now: $13.50 Was: Add to Cart Quick view Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $13.50 Was: Subtotal: Add to Cart