1 High Speed Steel Material: The installation tool in this spiral coil kit is made of high speed steel material, which provides excellent maneuverability 2 45# Steel Insertion Piece: The insertion piece is made of heat treated 45# steel material to improve strength and service life 3 Protect From Wear: Drill tap kits are ideal for repairing spalled or damaged female threads and performing maintenance work to protect any threads from wear 4 With Storage Box: Come with a convenient storage box, which can hold and organize all parts for easy transportation and storage between jobs 5 Easy To Use: The drill bit quickly creates space for installation tools to smoothly install and repair the old threaded blade, interrupt the tool to clean things for use in the field

What's in the box
1 x Thread Repair Kit