The product is 3/8x8x13 SDS Max Bit</br>Easy to use</br>The product is manufactured in United States</br>Bosch carbide rotary hammer bits feature tips that stay sharper longer and deliver more holes within their ANSI specification than competitors' bits.</br>Bosch shafts wear at a much slower rate than most others and can take more abuse because of Bosch's technologically advanced conditioning process.</br>Carbide tipped bit head is harder?? tougher?? and more resistant to extreme loads</br></br>Product Description</br></br>The product is 3/8x8x13 SDS Max Bit. Easy to use. The product is manufactured in United States.</br><br/>http://www.amazon.com/gp/product/B000EPOM14