[Product Parameters] - Screw size: M2 x 20mm (Thread Diameter x Total Length); Head diameter: 3.5mm/0.14inch; Head Type: Countersunk Slotted Head; Scope of delivery: 40pcs x Wood Screws Material: These wood screws are made of brass for high strength, wear resistance, corrosion resistance, long-lasting durability and reliability. Clear thread gradient, even tooth distribution and good fastening effect. Countersunk head design: Flat head screws keep the surface flat after installation. Self-tapping screws can be installed without pre-drilling, but pre-drilled holes can better preserve the integrity of the mounting surface. Wide range of applications: screws are an essential necessity in everyday life or in industrial production. Widely used in woodworking, furniture, home, industry, gardening, interior decorations or other DIY projects for installation, repair and fixing. For example, thinner metal parts, wooden fences, cabinets, cabinets, wooden walls and fastening of hinges, bars, hasps, etc. on wooden surfaces. Note: Wear gloves to protect your hands while working, and install the screws at a right angle of 90 degrees on the worktop to avoid tipping, which would affect the use.