Stop Design - prevents over drilling and sets hole depth to the drop in anchor</br>High Quality Carbide - Bosch produced carbide for performance and longevity</br>Flute Design - steep flute for quick dust removal</br>Delivers the precision required in anchoring</br>Better price for the performance</br></br>Product Description</br></br>BOSCH 1/2 In. x 1-11/16 In</br><br/>http://www.amazon.com/gp/product/B0058PJFKI