The Grit Guard Bucket Dolly Connector Plate is perfect for detailers, painters, and construction workers. The Grit Guard Bucket Dolly Connector Plate is perfect for detailers who use the two-bucket wash method. One bucket holds the soapy water. The second bucket holds clean water. Each time you need to reload the wash mitt with soap, first dunk it in the bucket of plain water to remove any dirt you've removed from the vehicle. Then reload the mitt with soapy water. Continue in this manner until you've washed the entire vehicle. You'll be surprised at how much dirt you've kept off the vehicle!