8PCS Fractional Cobalt Silver and Deming Drill Bits Set HSSCO M35 S&D Twist Drill Bits for Stainless Steel 1/2″ Reduced Shank 135-Degree Split Point 9/16″ to 1. 12.52 x 8.23 x 2.64 inches; 4.81 Pounds. M35 HSSCO High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. 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. 135-Degree split point for accurate centering and fast penetration and round shanks allow use with a wide variety of toolholding systems. When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging. Ideal for drilling in cast iron, zinc alloy, copper, stainless steel and so on. VALYRIANTOOL S&D Black Gold cobalt drill bits are designed for extreme durability and long life. A specially designed parabolic flute form 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, VALYRIANTOOL Black gold bits require less effort to drill through stainless metal, wood and PVC, and are highly recommended for use with portable drills. Features: Fast, accurate drilling: 135 degree split point tip starts on contact to prevent walking, while the parabolic flute clears chips fast. Reduced slipping: straight shank fits most drill chucks. Corrosion resistant: Black gold fully ground finish provides lubricity and resists corrosion of the bit. Versatile: Reduced shank diameter for use in 1/2 in. Specifications: Shank: 1/2 in. Reduced Pack: Qty 8 Type: Twist Drill Bits Coating: Black Gold Length: 6 in. Flute Length: 3 in. Size: 9/16″, 5/8″, 11/16″, 3/4″, 13/16″, 7/8″, 15/16″, 1″ in. We offer the best prices around on high quality products. Our E-store includes media such as books, movies, music and games while offering electronics, toys, sporting apparel, clothing, tools, general home, garden items and more. We are always working hard to ensure your package arrives as soon as possible. We do not accept P. Please provide a physical address. We try our very best to make sure every customer is completely satisfied. If there’s a problem, message us! We’re happy to help.