Item Type: Machine Reamer_x000D_ Material: High-Speed Steel_x000D_ Diameter: Approx. 1mm / 0.04in_x000D_ Maximum Tolerance of Holes to be Reached: H7mm_x000D_ Series: Machine Reamers_x000D_ Whether to Coat: Non-Coated 1High?speed steel material, high hardness, good toughness and wear resistance. 2Applicable to a variety of equipment processing, wide range of applications. 3The incisive cutting edge guarantees cutting accuracy and efficiency. 4Practical cutting tool, mainly used for reaming or trimming, easy to install. 5Machine reamer, durable and long?lasting, corrosion?resistant and long service life.1. Please allow 0?1 inch error due to manual measurement. Thanks for your understanding._x000D_ 2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard. 10 x Machine Reamer