Material: these adhesive curtain hooks are made of good quality plastic with self-adhesive back, they are durable and easy to install without any tools Easy to use: you just need to peel off the paper of yellow cover, then stick them on the dry wall; and they will have better effects on the wooden surface Application: These curtain hooks have good stickiness and hold your curtain rods securely, not easy to fall off Note : these plastic hooks with stick on the end are small parts, please don't put too heavy things on them Easy Installation: These adhesive hooks are made of stainless steel good quality with self-adhesive back, they are durable and easy to install without any tools; you just need to peel off the backing paper and then stick them on a dry wall; and they will have better effects on the wooden surface. Note: 1. These hooks with stick on the end are small parts, please don't put too heavy things on it. 2. Please clean the wall and let it dry before sticking the self-adhesive hook on the wall. It is recommended to hang the object on the hook after 24 hours. Specifications: Quantity: set of 20. Color: white.< /p> Material: plastic.