This hoop is compatible with Husqvarna Viking Designer Diamond Deluxe Royale Ruby Topaz 50 40 30 25 20 SE LE I II Platinum 955E, Sewing and Embroidery Machine. Other compatible machines, please check your machine manual Sew Tech embroidery machine hoops are accurate and strong Clear markings on hoops for easy reference Adjustable metal screw on the hoop help you to clamp a wide range of fabric firmly Used as a perfect replacement of the old hoops or have extra hoops to speed up your embroidery projects Experience embroidery capabilities with the Sew Tech Standard Embroidery Hoop A 4x4 inch (100x100 mm) Hoops, designed for Husqvarna Viking Designer Diamond Deluxe Royale Ruby Topaz 50 40 SE LE Platinum 955E, and other compatible sewing and embroidery machines (check your manual for specifics). Built for accuracy and lasting strength, it offers clear markings for easy alignment and an adjustable metal screw to firmly secure various fabrics. Whether you need a machine embroidery hoop replacement or an additional hoop to accelerate production, this embroidery accessory provides professional-quality results and streamlines your workflow—making it a must-have in your embroidery supplies.