Forney 21015 Bottom Tap Industrial Pro HSS UNF， 3/8-Inch by 24-Inch</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Unified National Fine (UNF)</li><li>High speed steel (HSS)</li><li>Includes 30-degree chamfer angle</li><li>Approximately 2 pitches chamfered and 1-1/2 tooth height</li><li>Used when threads need to go to the bottom of hole</li></ul></div></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br></br><img src='http://ecx.images-amazon.com/images/I/31mT375xS9L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/316wZ6Da8BL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/41dtP5ODZcL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31AKiRes2%2BL.jpg' noproxy></br>