SPRP2815 3/4" FGHT x 1" MNPT BRASS HEX NIPPLE ADAPTER

Hi! We are happy to know that your are interested in our Ridgid 17532 3" Knockout Punch. The hole in the center measures 3-9/16 inches (90.6 mm). You may also check the Product Catalog for more information. I hope this helps! For more inquiries, you may contact one of our customer support specialists at 435-868-4020 or through e-mail @ support@plumbersstock.com. Thank you for visiting PlumbersStock.com! Have a nice one!

Hi! Thank you for your interest in our Ridgid 17532 3" Knockout Punch. For inquiries about shipping and pick-up, please contact one of our knowledgeable customer service representatives @ 435-868-4020 between 8:00 am and 7:00 pm MST or through e-mail @ support@plumbersstock.com. They will be happy to assist you more. Thank you for visiting PlumbersStock.com. Have a great day!