Irwin 4935076 Hammer Drill Bit Set, 5 Piece Polyethylene Tubing Filtering efficiency for sub-micron size

Filtering efficiency for sub-micron size particles

Boot and frame are composed of impact-resistant polypropylene for durability and long-lasting use

0-550 RPM provides increased torque for drilling and mud mixing

Wrought brass inside trim

20 Amp AC outlets with automatic voltage regulation provides clean power

Irwin 4935076 Hammer Drill Bit Set, 5 Piece Polyethylene Tubing Filtering efficiency for sub-micron sizeHighlights: 5 Piece Carbide Tip Bits feature aggressive diamond ground tips for fast drilling, optimal flute design for fast dust removal A shortened carbide tip that allows dust to move into the flute quickly reducing build up Includes (1) one each: 5 32"x6", 3 16"x6", 1 4"x6", 3 8"x6", and 1 2"x6" Patented Carbide Tip Controlled Self Centering When Starting Holes; Aggressive Angles For Faster Drilling Patented Flute Design For Rapid Dust Removal,