Dormer Screw Machine Drill, Heavy Duty Premium, Series: A920, Metric/Imperial, 5.5 mm Drill - Metric, 0.2165 in Drill - Decimal Inch, 66 mm Overall Length, 3XD Cutting Depth, 2 Flutes, Parabolic Flute, 28 mm Flute Length, 0.2165 in Shank, Straight Shank, 130 deg Point, PFX Point, Right Hand Cutting Direction, HSS-E Cutting Edge, HSS-E, Bright, Applicable Materials: Magnetic Soft Steel, Structural Steel/Case Carburizing Steel, Plain Carbon Steel, Alloy steel/Hardened and Tempered Steel, Free Machining Stainless Steel, Austenitic, Ferritic + Austenitic, Martensitic, Lamellar Graphite, Nodular Graphite/Malleable Cast Iron, Titanium Unalloyed, Titanium Alloyed, Nickel Unalloyed, Nickel Alloyed, Copper, Bronze, Brass, High Strength Bronze, Aluminum Magnesium Unalloyed, Aluminum Alloyed, Thermoplastics and Thermosetting Plastics