If you are looking for a expansion bolts, then your research is over here. That’s because these products can meet your needs. Manufactured with , stable and strong for long time use. Excellent workmanship, no burrs, good texture, easy to carry. Features -Color: Silver. -Material: Galvanized. -Size: About 7.00X1.00X0.40cm / 2.75X0.39X0.16inch. -Abrasion resistant and , never rust. -Professional in design and practical in use, easy to install. -Lightweight design, no rust, no deformation, no pollution. -Expansion screw Bolts can be used in concrete and masonry. -They can provide you more convenient in the home fitment. Package list: 12 x hollow curtain wall expansion screw *32 10 x hollow curtain wall expansion screw *60 6 x hollow curtain wall expansion screw M5*52 6 x hollow curtain wall expansion screw M5*65 4 x hollow curtain wall expansion screw M6*52 4 x hollow curtain wall expansion screw M6*65 1 x PP plastic box