Features: 1. Applicable to gypsum board, benzene board, decorative panels, asbestos board, hollow board, solid board and other materials on the window curtain installation, lamp installation, object fixation. 2. The product can also used on cross embroidery, picture frame, ornaments, ornaments, art pendant installation and other multiple functions of the installation play a good role in fixing. 3. Antcorrosive, antirust, solid and practical. 4. Strong expansion in all hollow environments. 5. With the new anti-rotation technology, it does not rotate with the screws even in softer walls or drilled holes. Notice: 1. Actual color may be slightly different from the image due to different monitor and light effect. Please allow minor deviation due to manual measurement. Specification: Type: Aircraft Expansion Anchor Bolts Material: plastic Using method: 1. First drill holes in the hollow wall. 2. Insert anchor bolts. 3. Align the anchoring thing with the anchor bolts, insert the screws and turn it clockwise. 4. Until the screws can't be twisted. Package List: 10 set x Aircraft Expansion Anchor Bolts