High speed steel: made of high hardness high speed steel. & nbsp; Cutting edge: sharp edge, high cutting capacity, high precision, long service life. & nbsp; Application: Applicable for boring mold processing and craft processing. & nbsp; Widely Used: Widely used for bore machining, installed in drill, milling machine, etc. & nbsp; Treated surface: treated surface made of iron, steel, plastic, wood, copper, aluminum and other metallic materials. & nbsp; Description: The machine reamer is used for reaming workpieces which have drilled holes, mainly to improve the precision of the hole and reduce its surface roughness. With many blades, the machine reamer cuts and removes the thin layer of metal on the surface of the hole that has been processed.After processing a reamer, the size and shape of the machining hole can be accurate. & nbsp; Features: Made of high-speed steel, high hardness. Sharp, high cutting capacity, high precision, long service life. Applicable for boring mold processing and craft processing. Widely used for bore machining, installed in drill, milling machine, etc. Surface treated in iron, steel, plastic, wood, copper, aluminum and other metallic materials. & nbsp; Specifications: Material: high speed steel Shank diameter: 3/4/5/6/7/8/9 / 10mm Quantity: 8 Weight: 192g (approx) & nbsp; The packaging includes: 1 set (8 pieces) x machine reamers & nbsp; Note: 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.