High hardness and durabilityUnit 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 artisanal production. Widely used for drilling holes, installed in drilling 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 in the hole, mainly to improve the precision of the hole and reduce surface grain. High precision and long service lifeThe reamer of this machine adopts cutting edge, which has high cutting capacity, high precision and long service life. life. Size Cutting edge diameter: 12mm Cutting edge length: 66mm. Total length: 102mm describe: Reamers are mainly used for all punched 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 was 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 capacity is high, the precision is high, and the service life is long. Suitable for alesaggio casting 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: conical Precision reamer: H7 Burst: fine and thick Needle diameter: 12.065mm Needle length: 66mm Total length: 102mm Weight: 102g (approx.) Package included: 2 reamers The size within 1-3cm in size difference is within the normal range due to manual measurement. Color may have a little difference due to lights, screens.