Thruster style carbide tip penetrates on contact and plows through rebar</br>Thruster style re-inforced ground flute for efficient dust removal</br>Dynamic chisel shaped head keeps bit in contact with material at all times</br></br>Product Description</br></br>Makita D-00832-25 3/16-inch x 6-1/4-inch 25-Pack Carbide Tipped SDS-Plus Bit. Utilizes Makita's Thruster style carbide tip which penetrates on contact and plows through rebar. The Makita D-00832-25 has a reinenforced ground flute for efficient dust removal. The Makita D-00832-25 is designed for drilling into brick?? masonry and concrete. Use with SDS-Plus Hammers.</br><br/>http://www.amazon.com/gp/product/B002AJ86D2