Hello PENNEY and thank you for the feedback you posted on the Home Depot website. We are sorry to hear of the difficulty you experienced using the Moen Cartridge Retainer Removal Tool for 2-Handle Faucet, part number 179120. Customers using this tool have encountered difficulties when repairing faucets in hard/high mineral content water conditions. Moen also suggests using a pair of needle nose pliers instead of the Moen Cartridge Retainer Removal Tool for 2-Handle Faucet, to remove the cartridge retainer nuts. Moen product specialists are available for pre-purchase, installation and warranty assistance. They can be reached at 1-800-289-6636 and are available Monday through Friday from 8:00 am – 7:00 pm Eastern Time.