COMPLETE SAE REPAIR SOLUTION: This comprehensive 156-piece helicoil kit is engineered for the most common metric sizes (1/4", 5/16", 3/8", 7/16", 1/2"). It includes everything you need: drill bits, screw taps, high-strength wire inserts, installation, and break-off tools, providing a complete thread repair tool
PRECISION RESTORER: Don't just repair, reinforce. Our kit doesn't merely restore damaged threads; it creates wear-resistant threads that are often stronger than the original, especially in soft metals like aluminum and iron. Say goodbye to stripped threads for good
EFFORTLESS 3-STEP PROCESS: Achieve flawless results every time. Follow the intuitive Drill, Tap, Install process. The specialized 135° apex angle drill bits and smooth-installation tools work in harmony for perfect insert placement, while the break-off tool ensures a clean, ready-to-use finish
UNMATCHED DURABILITY: Engineered for a lifetime of service. Heat-Treated High-Speed Steel (HSS) drill bits and taps slice through metal with ease, while corrosion-resistant 304 Stainless Steel inserts guarantee lasting strength. The rubber-coated grip provides comfort and control during extended use
ORGANIZED & PORTABLE:Kolvoii heli coil thread repair kits include 135 thread inserts, 5 installation tools, 5 breaking pin tools, 5 screw taps, 5 drill bits, and 1 hex wrench.The custom carrying case keeps your tools secure and organized for damage-free transport
WIDE APPLICATION: Your mobile workshop companion. Tackle a vast range of repairs—from automotive engines and spark plugs to machinery bearings. Works on aluminum, iron, carbon steel, bronze, and more. Perfect for both professionals and DIY enthusiasts seeking dependable thread repair results