Check the listing for details. 2PCS Solid Carbide Drill Bit 2.5mm C2/K20 Tungsten Carbide Jobber Straight Shank. Color: Silver, Condition: New. Listed at 12.44 USD. Twist Drill Bits: Drilling Diameter: 2.5mm / 0.098"; Flute Length: 20mm / 0.79"; Overall Length: 40mm / 1.57"; Cutting Hardness (Max.): HRC45. Spiral chip space design for fast and clean chip removal. Sharp cutting edge provides smooth cutting and no glitches.Wide Applications: Widely used for drilling non-ferrous metal, cast iron, stainless steel, aluminum, copper, alloy steel, plastic, wood. Designed with the base substrate without any additional coatings, suitable for wide ranges of applications.Material: Constructed from medium grain C2/K20 tungsten carbide, the drill bit has good toughness, high hardness (HRA89) and wear resistance. With good milling and cutting performance, can ensure high work efficiency. Carbide tool offers faster cutting speeds than other substrates.