Key Features All-in-One Kit This 172-piece thread repair kit includes 5 drill bits, 5 screw taps, 150 wire thread inserts, and 10 installation and tang break-off tools. Covers common SAE sizes: 1/4"", 5/16"", 3/8"", 7/16"", and 1/2"". Durable Construction Manufactured from heat-treated high-speed steel with a corrosion-resistant finish for strength, wear resistance, and long service life. Versatile Application Designed to repair stripped or damaged threads in aluminum, iron, carbon steel, and other materials. Suitable for automotive, mechanical, and general repair work. Precision Tools Included 135-degree drill bits provide accurate drilling, while installation and break-off tools ensure proper insert placement and clean thread restoration. Organized Storage Case Includes a blow-molded case that keeps all components organized and easy to transport between jobs. Product Description This 172-piece SAE thread repair kit provides a complete solution for restoring damaged or stripped threads across a range of common sizes. The kit includes high-speed steel drill bits, taps, wire inserts, and installation tools designed for consistent and reliable performance. Suitable for use on various materials including aluminum, iron, and steel, this kit is a practical option for both routine maintenance and repair work. The included storage case keeps all components organized, making it easy to carry and access tools when needed.