Built to Last: This helicoil thread repair kit features drill bits and taps made from premium steel, heat-treated to HRC 55-62 for superior durability. The kit includes more metal thread inserts, each crafted from high-strength 304 stainless steel, ensuring longevity and reliability for all your repair needs.

Complete SAE Kit: Ideal for restoring damaged threads, this SAE helicoil kit is perfect for engine repairs and other automotive applications. It comes with 131 pieces: 110 thread inserts, 5 twist drills (17/64", 21/64", 25/64", 29/64", 17/32"), 5 taps (1/4"-20, 5/16"-18, 3/8"-16, 7/16"-14, 1/2"-13), 5 breaking pin tools, 5 installation tools, and 1 hex key. SAE sizes cover most component specifications, making it suitable for your daily repair needs.

Easy to Use: Designed for simplicity, this thread repair kit allows you to drill, tap, insert the coil, and break the tang to restore the thread—quickly and efficiently. Plus, the insert tool with a rubber-coated grip ensures a comfortable and reliable hold during work, which is ideal for mechanics, auto repair workers, and DIY enthusiasts.

Wide Application: This helicoil repair kit is specifically designed to fix stripped, damaged, or worn threads in a variety of materials, including aluminum, iron, carbon steel, bronze, magnesium, and more! Suitable for machining, automotive repair, and equipment maintenance.