Use LoRan Sure Grip Hoops for a variety of embroidery, cross stitch, and crewel projects. Hoop has a unique design that holds fabric taut while working and prevents slipping. When you use LoRan® Sure Grip hoops there is less fabric distortion because the hoop's edges are rounded and it features a concave edge on inner ring and a convex inner edge on adjustable ring. The large, textured knob tightens easily. Fabric stays in place once secured in hoop. 4" or 7" inner diameter