["50 Pcs Hollow Brick Expansion Screw Drywall Kit Self Drilling Wall Home Improvement Pierced Hardware Fasteners Supplies brand new and high quality Features: The plastic material screws are very durable and not easy to be broken, drywall self-drilling screws kit is made of metal, which features high. strength and offers good corrosion resistance in bad environment like high temperature, cold weather, and high humidity areas. The split in the ribbed screws expand on two opposing sides as you tighten the screw, increased holding power, anti-rotation structure. Design of the expansion sleeve, tighten the screw will not be followed in the drilling rotation. These drywall screws and screws is perfect for hanging a wall shelf in fairly soft drywall. The plastic drywall screws prevent the screws from turning in the hole during installation. Scope of application: Gypsum board, fiberboard, hollow board, etc., for curtains, lamps, for cross stitches, frames, frames, ornaments, decorative pieces, etc. Specification: Type: Drywall Screw Kit Material: Plastic + Metal Applications: for Nylon Plastic Gypsum Board Features: Drywall Screw Kit, Hollow Brick Expansion Screw, Self Drilling Fasteners, Wall Home Improvement, Pierced Hardware Fasteners Dimension: app.3x5cm/1.18x1.97in Color: White, Light for grey (optional) Quantity: 1 Set Note: 1.Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! Package includes: 50 Pcs x Drywall Screw Kit"] Note: Please allow 1-3 mm error/1-56g weight error and actual product color may vary due to lighting conditions.