High-speed Steel Tool: Good for general purpose applications, offering combination of hardness and toughness for wear resistanceUncoated Tool: Features just the base substrate without any additional treatment or coatings, suitable for wide ranges of applicationsHand Reamer: Reamer can be hand operated by use of wrenches and used for light cut, repair work, removing stock or simply for enlarging holesStraight Flute Tool: Allows chips to collect in the flutes when cutting, well suited for most applications in shallow cuts. Heat resistance, long service lifeApplication: Designed for accurate reaming in A3 steel, alloy steel, cast iron, cast steel, aluminum and other metal materials Our products are made with the splendid quality materials and are designed to provide you with the best possible user experience.