This comprehensive M8 stainless steel screw and nut kit is perfect for assembling and securing 4040 series aluminum extrusion profiles. The kit includes a wide variety of 30 pcs M8 screws ranging from 12mm to 20mm in length, with quantities, as well as 30pcs M8 T-nuts, totaling 60 pieces. A handy wrench is also included for easy installation. With this all-in-one set, you have everything you need for your 40x40 aluminum extrusion projects. The screws and nuts are made of high-quality Stainless steel for durability and corrosion resistance. The organized case keeps all the components neatly sorted and accessible. Whether you're building furniture, workbenches, or DIY projects, this kit simplifies the assembly process and ensures a secure fit every time.