The Zynthor 100Pcs M4 x 30mm Wood Screws are precision-machined, 304 stainless steel countersunk self-tapping screws designed for heavy-duty applications and repairs. These screws are perfect for DIY projects involving wood, plastic, and furniture assembly. Made to meet the highest standards of quality and performance, Zynthor screws offer a reliable alternative to traditional wood screws, providing superior strength and durability in challenging environments. With 100 pcs in a package, you can rely on this set to have what you need, whether it's for a tight budget or a professional project.