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Circulation Bits

The Steven M. Hain Co. Inc., custom manufactures specialized flat-bottom reverse/ direct Circulation Bits. These drill bits are designed and manufactured in the U.S.A. to meet geological boring specifications and project requirements, and they are fitted with either tungsten carbide inserted (TCI) rolling rock cutters, milled tooth cutters, or disc cutters. Both tapered sweep or skirt Intake designs are available on the Circulation Bits, which are available from 30-inches to 168-inches in cutting diameters. For more information or a quote on a custom-built Hain Circulation Bit, please give us a call at 1-800-527-1315, or send us an e-mail at

Hain 30-inch TCI rolling cutter circulation bit. Hain 48-inch milled tooth rolling cutter reverse circulation bit
Hain 78-inch TCI rolling rock cutter bit with sweep pick-up.
Hain 96-inch reverse circulation bit with TCI rolling rock cutters and sweep pick-up.