High hardness and durability The unitary reamers are made of high speed steel, these reamers have high hardness and durability. Use WildIt is suitable for drilling holes in mold making and craft making. Widely used for drilling holes, installed in drilling machines and milling machines, etc. Processing surface of soft materials such as iron, wood, copper and aluminum. Function: The reamer is used to ream the workpiece into the hole, mainly to improve the accuracy of the hole and reduce surface grains. High precision and long service lifeThe reamer of this machine adopts a cutting edge, which has high cutting ability, high precision and long service life. Size Cutting edge diameter: 12 mm Cutting edge length: 66 mm. Total length: 102 mm describe: Reamers are mainly used for all perforated parts to improve drilling accuracy and reduce surface roughness. And the number of blades, the equipment reamer cuts and removes the surface of the hole in which the thin metal has been machined. After developing a reamer, the size and shape of the conversion holes can be accurate. Features: These reamers are made of high speed steel with high hardness and strength. The cutting edge is sharp, the cutting ability is high, the precision is high and the service life is long. Suitable for casting alesaggio and crafts. Widely used for drilling, mounted on drills, frescher, etc. Finished surfaces of Teneri materials such as iron, wood, copper and aluminum. Technical specifications: Material: High speed steel Type: MT1 Hole shape: tapered Precision reamer: H7 Burst: fine and thick Needle diameter: 12.065 mm Needle length: 66 mm Total length: 102 mm Weight: 102g (Approx.) Package Included: 2 x Reamers The size within 1-3cm size difference is within the normal range due to manual measurement. The color may have a little difference due to lights, screens.