Reamer Dia.: 3/8"Taper Dia.: 15/64"Shank Dia.: 9.5mm / 3/8"Cutting Flute Length: 75mm / 2-15/16"Shank Length: 45mm / 1-3/4"Overall Length: 120mm / 4-3/4"Material: M2 High Speed Steel (HSS)Hardness: HRC63-65Style: Tapered Point, Spiral FlutesDescriptions:M2 high-speed steel reaming tools offer excellent wear resistance, toughness and heat resistance for long-lasting use. With just a base substrate (no additional coating), suitable for a wide range of applications. Taper reamer bit can align and enlarge pre-drilled holes in preparation for attachment bolts.Tapered point reamer allows access to overlapping holes or precisely enlarges tapered holes, providing a smooth, precise finish. Spiral flutes help to effectively discharge chips when reaming, prevent chip clogging, reduce heat buildup, and improve cutting performance.