Precision Twist Drill Core Drill, Long Length, Series: T400, 1/2 in Drill - Fraction, 0.5 in Drill - Decimal Inch, 8-1/4 in Overall Length, 4-3/8 in Cutting Depth, 4 Flutes, Spiral Flute, 4-3/8 in Flute Length, 1/2 in Shank, #2 Morse Taper Shank, 118 deg Point, Chamfer Point, Right Hand Cutting Direction, HSS Cutting Edge, HSS, Steam Oxide, Applicable Materials: Magnetic Soft Steel, Structural Steel/Case Carburizing Steel, Plain Carbon Steel, Alloy Steel, Lamellar Graphite, Alloy Steel/Hardened and Tempered Steel, Free Machining Stainless Steel, Austenitic, Ferritic + Austenitic and Martensitic