Features: Steam Tempered (Steam Oxide) Surface Treatment High Speed Steel Tool Material ANSI ? Tap Standards Right Hand Rotation / Cutting Morse Taper Shank This Precision Twist Drill T400 Drill bit is a core drill with 4 flutes, a Morse taper shank, diameter 1.6250" (1.5/8") with an overall length of 17" and a flute length of 10"", according to ANSI standard for enlarging pre-drilled or cast holes prior to reaming, HSS with steam tempered finish for machining free machining, plain carbon and alloy steel and grey and malleable cast-iron. Details: EAN number: 086071246400 Product name ISO: T4001.5/8 Cutting diameter - fractional inch (DC): 1.5/8 EDP number: 024640 Cutting diameter - inch (DC): 1.625 inch Ordering code ANSI: T4001.5/8 Cutting edge length - fractional inch (L): 10" Overall length - fractional inch (OAL): 17" Connection size code machine side (CZC MS): 5 Cutting diameter - millimeter (DC): 41.28 mm Overall length - inch (OAL): 17 inch Overall length - millimeter (OAL): 431.8 mm ANSI: T4001.5/8 ISO: T4001.5/8