Replacement Inserts, 1/2" x 13 NC, 6 Pack are designed for restoring damaged threads in metal applications. Made of high-quality 304 stainless steel, these free-running inserts are ideal for both professional and DIY thread repair projects in automotive and industrial settings. Thread Size: 1/2"-13 UNC Package Quantity: 6 inserts Free Running Type for easy installation and smooth performance Material: Durable 304 Stainless Steel, resistant to corrosion Internal Thread Size: 1/2"-13 Thread Type: UNC (Unified National Coarse) Thread Direction: Right Hand Insert Length: 0.750 inches Free Coil Diameter: 0.609 inches Tap Sizes: 1/2"-13 STI Drill Size: 33/64 inches Tensile Strength: 200,000 to 250,000 PSI Rockwell Hardness: C43-C50 Designed for metal applications Benefits: Restores stripped or damaged threads, saving on costly repairs or part replacements. High tensile strength and hardness for long-lasting performance. Convenient 6-pack, perfect for multiple repairs.