Hi! Thank you for asking about the Cleveland 46201CSL pull-down kitchen faucet. The decorative handle dome must be removed to access the cartridge retaining nut. Try spraying a 50/50 water vinegar solution around the dome to allow it to break down any water buildup. Use channel lock pliers to give yourself a good grip on the dome. You can find them by entering "channel lock pliers" on the search bar. We hope this information helps. To purchase, click the add to cart button and fill in the required fields. Thank you for going with PlumbersStock. Enjoy your shopping!