Specifications:Size: 5mm x 5mm x 200mm / 3/16″ x 3/16″ x 7-7/8″End Shape: SquareMaterial: M2 HSS (High Speed Steel)Hardness: HRC66Package Included: 1pcs x Square Lathe Tool Bit BlankDescriptions:Square lathe tool bit blank is made from M2 high speed steel (HSS), known for the excellent wear resistance and toughness. It is a general purpose superior finishing tool showing excellent results on mild steel, alloy and tool steel.Tool bit blanks are suitable for turning, milling, facing, threading, grooving, parting, cutting, boring, engraving, chamfering, etc. Commonly used in a lathe, a milling machine fly cutter or a metal shaper.Square parallel tool features a continuous width cutting edge throughout the entire length of the tool bit.