Features Durable Carbon Steel Construction - Crafted from high-quality carbon steel and blue zinc plating for enhanced resistance and strength, ensuring long-lasting use Precision Cutting Technology - Features accurately cut threads that provide sharpness and a clean finish, allowing for easy and efficient installation Optimal Grip Design - Deep, clear threads ensure excellent penetration into wood and plastic, preventing deformation and slippage during application Ideal for Wood Applications - Specifically designed as a wood drill tail screw, perfect for securing steel tiles and plates with straightforward assembly Versatile Use Cases - Perfect for a wide range of applications including household appliances, furniture assembly, and various woodworking and DIY projects Features: 1、STURDY Carbon steel blue zinc plated: Excellent Carbon steel blue zinc plated with superior resistance, stronger and less breakable 2、ACCURATE AND OF SHARPNESS: With high accuracy cutting technology, the thread is very accurate, clean and of sharpness 3、EASY GRIP: Deep and clear threads can easily penetrate wood and plastic, ensuring a firm grip, not easy to deform and slip during use 4、FOR WOOD: This is a wood drill tail screw, which is mainly used for fixing color steel tiles of steel structure, and can also be used for fixing plates with simple construction 5、VARIOUS PURPOSES: Used in household appliances, furniture and many woodworking and DIY jobs, furniture and cabinet industries Specification: Item Type: Self Drilling Screws Material: Carbon Steel Blue Zinc Plated Color: Silver Uses: Used in household appliances, furniture and many woodworking and DIY jobs, furniture and cabinet industries Size: Approx. 16mm / 0.63in 32mm / 1.26in 38mm / 1.5in 19mm / 0.75in 1m / 0.51in 25mm / 0.98in Package List: 25 x M4.2x16mm Self Drilling Screws 20 x M4.2x32mm Self Drilling Screws 20 x M4.2x38mm Self Drilling Screws 40 x M4.2x19mm Self Drilling Screws 25 x M4.2x13mm Self Drilling Screws 30 x M4.2x25mm Self Drilling Screws 1 x Storage Box Package List 25 x M4.2x16mm Self Drilling Screws 20 x M4.2x32mm Self Drilling Screws 20 x M4.2x38mm Self Drilling Screws 40 x M4.2x19mm Self Drilling Screws 25 x M4.2x13mm Self Drilling Screws 30 x M4.2x25mm Self Drilling Screws 1 x Storage Box