*PLUMBERSSTOCK EXPERT* responded:
Hello! We are glad to know about your interest in the Sioux 660-GTR1B. According to Sioux, this 3/8" outer diameter mini-rester will work with a standard sink connection. About your other question, this Sioux 660-GTR1B can't be used for a toilet connection because it is used for lavatory connections only. You may want to check this Specification Sheet for more information. If you're ready to order this product, just click "Add to Cart" and put your postal code and you're ready to go. For a toilet connection, you will need to order the Sioux 660-TKB Mini-Rester. To know more about this Sioux 660-TKB, please check page 22 of this Brochure. The Sioux 660-TKB mini-rester is not yet posted on our website but updating of information is ongoing. Just have the product number ready and call one of our customer support specialists at 435-868-4020 or send a message by pressing the "Contact Us" tab found on the bottom right part of your screen. Enjoy shopping!