Features: Made from high speed steel, these reamer cutters have high hardness.High-speed steel tool is good for general purpose applications, with combination of hardness and toughness for wear resistance Sharp cutting-edge, high cutting ability, high accuracy, long service life. Applicable for reaming to mold processing and handicraft processing. Widely used for bore machining, installed in drilling machine, milling machine, etc.Can be used with a wide variety of tool holding systems. Reamers are used for light cut, repair work, removing stock or simply for enlarging holes Processed surface of iron, plastic, wood, copper, aluminum and other soft materials.Designed for accurate reaming in most materials, using all types of equipment including screw machines, turret lathes, drill presses and machining centers.