High-speed Steel Reamers: Accuracy: H8; Adjustment Range: 21mm - 23mm (Cutting Diameter); Tool Flute Length: 69mm / 2.72"; Square Shank Size: 10.8mm / 0.43"; Overall Length: 195mm / 7.68". Provides durability, high hardness, good toughness, wear resistance, high temperature resistance, and the ability to maintain sharpness over time. Wide Applications: The reamer is designed to accurately enlarge, smooth, or finish holes in stainless steel, cast iron, aluminum, non-ferrous metals, plastic, and wood. Widely used in hole repair work, pipe and fittings, and woodworking applications. Hand Reamer: The reamer drill bit can be hand operated using a wrench, T-handle wrench, extension rod, or drill chuck. Suitable for light cutting, repair work, stock removal, or enlarging holes. Straight Flute Reamer: Allows chips and debris to escape easily from the hole, well suited for most applications involving shallow cuts. Helps achieve required roundness, straightness, and concentricity of the hole. Uncoated Reamer Drill Bit: Features the base substrate without additional coatings, suitable for use on a wide range of materials. Tapping fluid or cutting oil can be used to lubricate the reamer and workpiece to reduce friction and extend tool life.