Material: The square embroidery hoop is made of ABS plastic, which is durable, wear-resistant, non-toxic and reliable material. Multi-size embroidery hoops: 4 sizes, 7 x 7.5cm, 9.5 x 11cm, 14.5 x 16.5cm, 19.5 x 22cm, will meet your different needs. Beautiful colors for the embroidery hoops: 4 colors to meet your different styles and match your embroidery or decoration perfectly. Easy to use: There is an upgraded adjustable screw in the middle of the plastic embroidery hoop, you can easier to use and tighten it if necessary to keep the fabric as tight as a drum and easy to hang on the wall. Practical function: after embroidery, you can use colored plastic embroidery hoops to craft decoration, as a beautiful gift, 4 different colors give you different feelings of use. Product Description 4 colors 4 sizes ABS embroidery hoops for crafts embroidery hoop 4 kinds of colorful plastic embroidery wreaths are very suitable for children to learn and can test their hand ability, amazing cross stitch embroidery crafts When the DIY project is finished, decorate the edges with lace, paint, gems or other materials and use it as a display. Approximate size: 7 x 7.5 cm. 9.5 x 11 cm. 14.5 x 16.5 cm. 19.5 x 22 cm. How to use embroidery hoops 1. Separate inner and outer frames. 2. Place the frame on a flat table. (frame side down) 3. Cover the frame with a plain embroidery fabric. (embroidered side down) 4. Gently press the inner frame into the outer frame with an embroidery cloth. (inner frame down) 5. Turn the embroidery cloth over to feel the tightness, and it can be used for embroidery in a tight state. How to adjust the tension: These embroidery hoops have a screw adjuster that you can tighten if necessary to keep the fabric as taut as a drum. As a result, the fabric can be stretched and stay that way in the process. You don't have to constantly pull on the sides of the fabric to achieve tension. contents: 4 square embroidery hoops