The Milwaukee® 11" Extension lets you drill deeper in concrete, block and brick with drilling heads from 1-1/2" to 3-1/4". This versatile adapter can be used with LHS Thick-Wall Carbide-Tipped Core Bits, LHS 4-Cutter Fluted Bits or Turbo Tunnel bits for large holes in a variety of sizes and depths.
Large Hole Drilling System offers maximum versatility to suit a variety of jobsite applications, hammers and depths. Simply choose an LHS core bit, tunnel bit or 4-cutter fluted bit in the size you need and add a spline shank or SDS-MAX shank adapter. For greater lengths, add 11" extensions (48-20-5079).