Singer Large Hoop for XL400, XL550, XL580 and Quartet Embroidery Machines Singer XL400 Large Embroidery Hoop is great for those extra-large projects and designs With it you can create, embellish and show off huge works of embroidery while you use your amazing Singer Sewing and Embroidery Machine. Embroidery Area Dimensions 7 1/8" x 11 1/2"