Our favorite model was the Drill Doctor 750X because it was easy to use on different drill bit types and sizes, worked fast, and sharpened many of our bits to better-than-new condition. But if you ...

A drill bit is what actually cuts into the rock when drilling an oil or gas well. Located at the tip of the drillstring, below the drill collar and the drill pipe, the drill bit is a rotating ...

A countersink is often essential when working with screws to ensure the head of the screw is flush with the surface. Depending on your chosen material, the best countersink bit will enable you to ...

If you plan on drilling into brick, concrete, or stone, you’re going to need to use a masonry drill bit. These specialty bits have strong carbide tips for boring through hard materials, and wide ...

Dear James: I have a box of old, dull drills that could not go through warm butter. When I buy new ones, what type is best for different types of drilling tasks? -- Anne Y. Dear Anne: There is nothing ...

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." If you plan on drilling into brick, concrete, or stone, you’re going to need to use a masonry drill bit.

ATLANTA, May 6, 2025 /PRNewswire/ -- Diablo Tools ("Diablo"), which offers a solution-oriented range of best-in-the-world and best-for-our-world products for the professional user, unlocks new levels ...

A reliable, everyday metal drill bit that offers extreme durability and maximum efficiency simply hasn't been an option—until now. Diablo's revolutionary Metal Demon™ Drill Bits for Mild, Hardened and ...