caydo 6 pieces embroidery hoops and 15 needles, plastic circle cross stitch hoop ring embroidery circle set, 3.4 inch to 10.4 inch (multicolor) caydo caydo embroidery hoop cross stitch hoop are great for working all kinds of crafts from needle arts to fabric painting frame. <br><br> <br> <b>how to use:</b><br> unscrew to release the inner hoop, place your chosen fabric over the inner hoop then lock into place with the top hoop and screw in to tighten. <br><br> <br> <b>how to adjust the tension:</b><br> these embroidery hoops have a brass adjustment screw that you can tighten when necessary to keep the fabric as tight as a drum. as a result, the fabric can be stretched drum taut and stays that way during the process. you do not have to constantly pull the sides of he fabric to tighten. <br><br> <br> <b>specification:</b><br> material: plastic <br> color: purple, orange, yellow, green, blue, purple red.<br> different sizes suitable for different sized embroidered cloth <br> once the project is finished, embellish the edges with lace, paint, gems or other such materials and use it as a display frame <br><br> <br> <b>package</b><br> 1 x 3.4 inch/ 8.6 cm embroidery hoop. <br> 1 x 4.7 inch/ 12 cm embroidery hoop. <br> 1 x 6 inch/ 16 cm embroidery hoop. <br> 1 x 7.67 inch/ 19.5 cm embroidery hoop. <br> 1 x 9 inch/ 23 cm embroidery hoop. <br> 1 x 10.2 inch/ 26 cm embroidery hoop.<br>