Champion DT22HEX-1/4-20 Combination 1/4 - 20 Drill and Tap Hex Shank</br></br><div style="text-align:left"><b>[Product Information]</b><br><ul><li>Tapered neck design significantly reduces drill & tap breakage</li><li>The 135 degree split point drill permits holes to be cut at high speeds. Taping caution must be adhered to with slower speed.</li><li>Superior strength durability provided by high Molybdenum content and high speed steel with functional black and gold surface treatment that holds lubricant for smoother drilling.</li><li>Applications include: Construction， Electrical， Maintenance， Industrial， Automotive， Farm Implement Machinery， HVAC. Cuts steel， cast iron， aluminum， bronze， brass， zinc and some stainless steel.</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/21Oa20gmDIL.jpg' noproxy></br><img src='http://ecx.images-amazon.com/images/I/81zbpXqGePL.png' noproxy></br>