• Upgrated Design: Unique crown drill head for easy positioning when drilling. Rock carbide tip maximizes carbide surface contact for longer bit life. 
  
• Efficient Design: Special bevel connection is designed for reducing resistance. Triangle Handle is designed for preventing slipping. Sandblasting Treatment: It enhances rust protection property through adopting special overall sandblasting treatment. 
  
• Package: 7Pcs Drill Bits including 3/16"*80mm, 1/4"*100mm, 5/16"*100mm, 1/4"*152mm, 5/16"*152mm, 3/8"*152mm, 1/2"*152mm Bit Sizes. Widely Use: Suitable for drilling holes in Masonry, Concrete, Rock, and Artificial Stone.