Name: HIGHDRIL Diamond Sintered Double Row Grinding Wheel Quantity: 1pc only Specification: Dimond Grit:#40/#50 Color:Venecian Blue Is Customized:Yes Technology:Hot sintering process Diameter:115mm/4.5inch Inner Diameter:22.23mm Segment Thickness:5mm Applicapable: Mainly used for grinding and polishing Concrete, Masonry, Granite,Marble and some other construction material. Feature: 1.High quality and strong steel matrix, able to bear heavy and hard work; 2. Double row agglomerate design, compact arrangement and good grinding effect; 3. 5mm thick working block is made of high-grade diamond particles combined with scientific ratio, with strong grinding ability, high efficiency and wear resistance; 4. The air hole design helps to dissipate heat, remove debris and prolong the service life of the product; 5. Each grinding wheel is subject to dynamic balance treatment, which can grind evenly without shaking; 6. It can be used both dry and wet.