Product Description: 7 Size Assorted Wire Screw Sleeve Set This comprehensive set includes 7 sizes of wire screw sleeves, perfect for various applications: - M3 x 0.5 x 2D - 20 pcs - M4 x 0.7 x 2D - 20 pcs - M5 x 0.8 x 2D - 20 pcs - M6 x 1 x 2D - 20 pcs - M8 x 1.25 x 2D - 20 pcs - M10 x 1.5 x 2D - 10 pcs - M12 x 1.75 x 2D - 10 pcs Convenient Storage Each size is neatly organized in a plastic grid case, allowing for easy access and selection. The grid design ensures that your wire thread inserts are stored securely and sorted by size, making it simple to find what you need. Durable Material Crafted from high-quality 304 stainless steel, these screw sleeves offer exceptional hardness and rust resistance. They are designed to withstand corrosion and deformation, ensuring long-lasting performance. Superior Performance Featuring smooth threads and high precision, these wire screw sleeves are not prone to slipping. Their high hardness and low abrasion make them reliable for various applications. Versatile Applications Ideal for repairing damaged threads in automobile spark plugs, cylinder heads, and drain plugs, this set is a must-have for any mechanic or DIY enthusiast.