Drillco 1000E Series 5 Piece High-Speed Steel Reduced Shank Drill Bit Set, Uncoated (Bright)/Black Oxide Finish, Round with Flat Shank, Spiral Flute, 118 Degrees Conventional Point, 9/16" - 1" in 1/8" increments

Drillco 5 piece reduced shank S and D drill set. Expands the size range capacity of a 1/2-inches portable drill chuck. Common flute and overall length for minimal adjustment during tool changes. Precision ground for a high degree of concentricity between shank and body diameter. Ideal for drilling low and medium tensile strength materials. High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance. Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications. Black oxide treatment adds lubricity and creates small pockets on the surface of the tool that act to hold coolant near the cutting edge. 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.

• High-speed steel tools are good for most general purpose applications, offering a combination of hardness and toughness for wear resistance
• Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications
• These round shank tools have flats ground onto three sides to reduce slippage of the bit when used in drill chucks
• When run in a counterclockwise direction (right-hand cut) spiral fluted tools evacuate chips up and out of the cut to reduce clogging
• 5 Piece reduced shank S and D drill set