Fractional Cobalt and Deming Drill Bits Set for Stainless Steel

The VALYRIANTOOL COBALT BLACK GOLD 1/2" REDUCED SHANK DRILL BIT is designed for extreme durability and long life. The drill bit features a specially designed parabolic flute form that clears chips fast, while the straight shank fits most drill chucks. The 135-degree split point tip delivers a precision start and prevents walking for fast, accurate holes. Effective for drilling on curved surfaces, the VALYRIANTOOL Black Gold bits require less effort to drill through stainless metal, wood, and PVC, and are highly recommended for use with portable drills.

The 135-degree split point ensures easy cutting and no skipping, while the 3-flat 1/2" reduced shank provides anti-slipping and fits most drill chucks. The upgraded surface treatment with a black gold coating provides lubricity and resists corrosion of the bit. The drill bit is made of real HSSCO cobalt material, which offers strengthened hardness and toughness for wear resistance.

The VALYRIANTOOL S&D Black Gold cobalt drill bits are designed for a wide range of applications. The M35 HSSCO high-speed steel tools are suitable for most general-purpose applications, offering a combination of hardness and toughness for wear resistance. The black and gold polished treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge.

The 135-degree split point ensures accurate centering and fast penetration, while the round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut), the spiral fluted tools evacuate chips up and out of the cut to reduce clogging. These drill bits are ideal for drilling in cast iron, zinc alloy, copper, stainless steel, and more.

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