Features: 100% brand new and high quality Made of high quality material, durable and practical to use Advantages: sharp Suitable for metal, machinery, wood products, bearings, etc. Hexagonal shank grinding wheel grinding head, the grinding head made of brown corundum, good texture, strong wear resistance. It is widely used for grinding and engraving workpieces such as jade, jade, ceramic glass, cemented carbide, and gems. Exquisite design to increase contact surface, improve grinding efficiency, and no dust pollution. Specifications: Material: Brown CorundumCone ConeApprox. 25x44x42x6.3mm/0.98x1.73x1.65x0.24inch Cylindrical Approx. 25x24 x44x 6.3mm/0.98x0.94x1.73x0.24inch Package includes: 1x Grinding Head Note: 1.Please allow 1-2mm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.