Environmental and Material: Bamboo, without burr, smooth and safety to the body. Workmanship: Sanded smooth makes each hoop a joy to handle. Easy operation: Embroidery hoops have a brass adjustment screw that you can tighten when necessary to keep the fabric as tight as a drum. Applications: Not only for embroidery, also used in wall decoration, wedding decoration, garlands, decor and dream catch. Name:16 Inch Embroidery Hoops How to use: 1. Loosen the outer screw, lay flat the inside hoop, put the cloth on the hoop, then put the outer hoop on the inside hoop. 2. Flat the cloth and tighten the screw. 3. Continue to flat the cloth to there are no pleats, and pay attention to fabric to make the warp and the welt both vertical and horizontal, and finally tighten the screws. 4. Inspect the hoop whether it is tight enough. The way to check the tightness is to use a needle with thread going through the fabric . It is workable if there is a bang bang sound when pulling the thread. Colour:Wood Color Material:bamboo Size:Diameter 40cm Package Contents: 6 x 16 Inch Embroidery Hoops Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.