Package Contents: 8 brackets. Enough quantity to meet the necessary blind equipment. Replacement bracket for hanging and sticking on fixed frames of Venetian blinds/double shutters. They can be mounted on the window frame without drilling and provide additional support for the blinds. Suitable for PVC and wooden windows with or without openable rubber sealing strips, the self-adhesive strip ensures the stability of the hook and prevents it from moving on the window. Material: Our products are made of high-quality POM and the glue on the back is very strong! (It is recommended to clean the adhesive surface of the window with a cloth beforehand.) The replacement part is compatible with 1.2 cm fabric roller blind brackets and support rails and 3.6 cm height mounting rails. Installation Tips: After installing these roller blind bracket replacement parts, please do not use them within 24 hours to ensure a stronger bond.