Dry core bit for drilling through a concrete wall for a pipe or duct run where water cannot be used, made for micro-percussion drilling machines. The screwed body clears sludge from the hole as it cuts, and the laser-welded turbo segments cut without coolant: an 82 mm hole through 200 mm of B35 concrete in about 2.5 minutes. 300 mm length, 1 1/4 in UNC shank. Diameters span 32 mm to 200 mm. ADTnS is part of the Distar group. ADTnS DDS-W RS-TX.
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