Product Details
Thunderbolt black oxide jobber length drill bits are engineered for extreme durability and longevity, making them suitable for general-purpose drilling in wood and metal. The 5/16" drill bit features a Thunderbolt web design that incorporates a thicker core than standard drill bits, enhancing strength and resistance to side-load breakage. Its specialized parabolic flute form efficiently clears chips and debris, ensuring the bit remains cool during use. The precision start is facilitated by a 135-degree split point tip that initiates on contact, preventing walking for fast and accurate hole drilling. This drill bit is particularly effective on curved surfaces and requires less effort when drilling. The black oxide coating adds lubricity and serves as an anti-corrosive barrier, making it excellent for use with cordless drills. The Thunderbolt core significantly resists breaking, ensuring reliable performance across various applications.
