Upgrade your repair and maintenance toolkit with the 116pcs Helicoil Thread Inserts and Self-Tapping Steel Set. Made of high-quality 304 stainless steel, these inserts and self-tapping steel are built to last. The set includes M3, M4, M5, M6, M8, M10, and M12 sizes, ensuring compatibility with various applications. The set comes in a convenient translucent storage box with separate slots for each size, allowing for easy organization and selection. The anti-rust and anti-corrosion properties of the inserts and self-tapping steel ensure long-lasting performance and reliability. Whether you're working in aviation, automobile, steam turbine, electronic communication, mold, or mechanical equipment, this set is a must-have. It provides a reliable solution for thread repair and maintenance, ensuring the integrity and longevity of your projects. Upgrade your toolkit today with the 116pcs Helicoil Thread Inserts and Self-Tapping Steel Set. Experience the high performance and durability that professionals trust.