Forney 20889 Taper Tap Industrial Pro HSS UNC， 5/16-Inch-by-18</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>High speed steel</li><li>Unified National Coarse (UNC) taper tap</li><li>Includes 4-degree chamfer angle</li><li>7-10 pitches chamfered and 8-10 tooth height</li><li>For use on hard materials</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/31YHFcl-RJL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31mAtAZKn9L.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/31sM5l6DFkL.jpg' noproxy></br>