Dual Lock Mount Design: Two-in-one hook and loop strip tape, each side of our strip has both hook and loop. Dense Interlocking head stems locked each other tightly to provide 1.5X grip strength than other products. How to Use Picture: 1.Clean the surface, some surfaces that are heavily oiled can cleaning with alcohol. 2.Remove the liner from one side and stick it onto the frame, pressing firmly. 3.Remove the liner from the other side and stick the frame onto the wall. 4.Press the frame firmly for 2 minutes to strengthen the adhesion. 5.Please don't try to move the picture hangers within 24 hours after installation. Caution: 1.Do not hang on bedside or wallpaper. 2.Do not hang valuable or irreplaceable items. 3.Not recommended for mounting bookshelves, tapestries or shadow boxes. 4.Do not apply strips to paper or fabric surfaces on the frame. 5.This product has a different A/B (HOOK/ LOOP) side, please don't put same sides together, they will NOT be sticked to each other. Product Detail: Large Size: 3.62 x 0.75 inches / 92 x 19mm. Package Contains:30 pairs Picture Hanging Strips..Items from Sheng Xinshun's shop