Heli-Coil R11917 7/16-20 Inserts/Pk 6<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Price For: Each Meets/Exceeds: - Thread Type: UNF Rockwell Hardness: C43-C50 Item: Helical Insert Thread Direction: Right Hand Application: For Metal Type: Free Running Helical Tensile Strength (PSI): 200， 000 to 250， 000 Tap Sizes: 7/16-20 STI Internal Thread Size: 7/16-20 Drill Size: 29/64" Material: 304 Stainless Steel Length: 0.656" Free Coil Dia.: 0.537"</li><li>Country of Origin (subject to change): United States</li></ul></div><img src="http://ecx.images-amazon.com/images/I/51THU-vl2uL.jpg" noproxy>