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You’d think manufacturers have done just about everything possible to make drill bits perform better, but it seems they still have a few tricks up their sleeves. Colt, a German drill bit manufacturer, recently introduced some new bits with what almost looks like a four-flute design.

Made of alloy steel, the Twinland brad point bits use a 25º flute with a recessed land — the land is the raised area of the spiral bit. By creating a void in the land, the design removes chips faster and helps prevent one cause of burning, where chips get between the land and the hole wall. The second “land” surface also is supposed to improve guidance and accuracy.

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