Long drill bits featuring 3 offset aggressive power breakers to produce a "Demolition" effect and create micro cracks in the drilled material for faster drilling. Reinforced flute with high volume flute geometry offers optimum dust removal, whilst the thick core provides full power transfer to the tip, lower vibrations, and exceptional break resistance and durability. Centering tip ensures immediate, accurate spot drilling and prevents skidding on smooth surfaces, and the tapered shoulder design creates less friction enabling greater speed. Also features enlarged rebar chamfers to prevent side tip damage when hitting rebar. High-Speed Steel SDS Plus Shank 10mm-20mm Dia. Drill Bits Suitable for Masonry, Concrete & Reinforced Concrete Carbide Tip For Use with SDS Plus Drills High-Speed Steel SDS Plus Shank 10mm-20mm Dia. Drill Bits Suitable for Masonry, Concrete & Reinforced Concrete Carbide Tip For Use with SDS Plus Drills