Item Type: Diamond Dresser Product Material: Diamond + Carbon Steel Product Diameter: Approx. 12mm / 0.5in Shank Diameter: Approx. 10mm / 0.4in Shank Length: Approx. 27.5mm / 1.1in Number of Diamonds: 51[MULTIPLE USAGES] This diamond dresser can be used to remove debris and impurities from the grinding wheel, extending its service life. 2[5 POINT DESIGN] Using excellent diamond material, and 5 point design ensures accuracy and finish of machined parts. 3[EASY OPERATION] Make its top perpendicular to the radial direction of the grinding wheel, and the axial direction of the chain pen is 15 to the grinding wheel radial direction. 4[FINE PROCESSING] Using vacuum low temperature welding process, the diamond welding is firm, and the particles do not fall off. 5[CARBON STEEL SHANK] The shank of the dressing pen is made of carbon steel, which has high hardness and wear resistance. 1 xDiamondDressing Pen