Twist Drill Bits(159 products)

The DEWALT Maxfit Screw driving and Drill Bit Set is ideal for securely fastening a variety of flathead, Phillips, square and torx screws. This versatile, 136-piece set also includes a 14-piece Black Oxide Drill Bit Set for added functionality. These industrial-grade twist-drill bits are cut from super-hard, resilient black oxide for ultimate durability and strength. A magnetic screw lock sleeve is included so you won't drop any fasteners, while the magnetic drive guide helps prevent wobble and slipping when driving screws and other fasteners.

This 21-piece high-speed drill bit set features a general-selection assortment of virtually every size of drill bit you're likely to need. Suitable to use on steel, plastic and wood, and precisely machined to ensure an accurate hole diameter, these drill bits are intended to withstand heavy-duty use for all of your home renovation or repair projects.

Milwaukee Thunderbolt Black Oxide Jobber length drill bits are designed for extreme durability and long life. The Thunderbolt web features a thicker core than a standard drill bit, which provides ultimate strength and protects against side-load breakage. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. A precision start, 135 Split Point tip starts on contact to keep the bit from walking for fast accurate holes. Excellent for drilling on curved surfaces, requires less effort to drill and is highly recommended for use with portable drills. The 3-Flat Secure-Grip shank won't slip in the drill chuck. Reduced shank diameter for use in 3/8-inch chucks.

The Milwaukee 48-89-2303 Thunderbolt Cobalt drill bits are designed for extreme durability and long life in specialty applications. The Thunderbolt web features a thicker core than a standard drill bit to provide ultimate strength and protect against side-load breakage. A specially designed parabolic flute form clears chips and debris fast to keep the bit cool. The 135 split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, Milwaukee Thunderbolt Cobalt bits require less effort to drill through stainless steel, high alloy steel and cast iron and are highly recommended for use with portable drills.