Helical Insert, Free Running, 304 Stainless Steel, Internal Thread Size M16x2, Thread Type MC, Thread Direction Right Hand, Length 24mm, Free Coil Dia. 19.25mm, Tap Sizes M16x2 STI, Aluminum Drill Size 16.7mm, Tensile Strength 200, 000 to 250, 000 PSI, Rockwell Hardness C43-C50, For Metal, Package Quantity 6