Self Starting Point?? starts on contact</br>Balanced Double Flute Eliminates chatter and vibration</br>Trailing Flute Automatically deburrs holes</br>Resharpenable Cutting Edge enables Longer tool life</br></br>Product Description</br></br>BOSCH 1/2 In. Titanium-Coa</br><br/>http://www.amazon.com/gp/product/B000F3SI2O