Description: Machine reamer is used to ream workpieces that have been drilling hole, mainly to improve the precision of hole and reduce its surface roughness. With many blades, machine reamer cuts and removes the thin layer metal on hole surface that has been processed .After the processing of a reamer, machining hole size and shape can be precise. Features: Made from high speed steel, high hardness. Sharp cutting-edge, high cutting ability, high accuracy, long life. Applicable for reaming to mould processing and handicraft processing. Widely used for bore machining, installed in drilling machine, milling machine, etc. Processed surface of iron, steel, plastic, wood, copper, aluminum and other metal materials. Specifications:Material: High Speed SteelShank Diameter: 3/4/5/6/7/8/9/10mm Quantity: 8 Weight: 192g(approx.) Packaging Includes:1 Set(8pcs) x Machine ReamersNote: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..