Durkee Hoop Adjusting Screw – The Embroidery Store
Replacement Screws for Embroidery Hoops — AllStitch Embroidery Supplies
3pcs Embroidery Hoop Set Bamboo Circle Cross Stitch Needlework Hoop Ring for Embroidery and Cross Stitch, 5"-7" Adjustable Round Embroidery Hoops for Home Ornaments, Art Craft Handy Sewing - Walmart.com
8mm Slender Embroidery Hoop NO SCREW Klass & Gessmann – Sublime Stitching