Ryobi RPD1010K (5133002058)

"IRWIN Silver and Deming High Speed Steel Fractional Bit is constructed of M-7 high speed steel for high resistance to abrasion during tough drilling applications. All Silver & Deming bits are 6"" lon more→g and feature a 1/2"" reduced shank that fits all 1/2"" drills. Heavy-duty metal drilling, automotive, body shop, metal fabrication."

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 to provide ultimate more→strength and protect against side load breakage. A specially designed parabolic flute form clears chips fast, while the 3-Flat Secure-Grip shank holds the bit firmly in the drill chuck. The 135 degree split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, Milwaukee Thunderbolt Black Oxide bits require less effort to drill through metal, wood and PVC and are highly recommended for use with portable drills.

With a pilot point tip that starts on contact, DeWalt gold ferrous drill bits deliver clean, accurate holes and helps to reduced lock-ups. The bit spinning in the chuck and a tapered web provides help more→s to increased durability to helps to reduce breakage. Size markings are located above the shank to helps to prevent wearing.