Instruction: 4 Inch Aluminium backing use high quality of material of bond that made the hook and loop more stronger for attachment. Brass arbor with 5/8" 11 Thread and center water hole. maximum speed rating is 5000RPM,Never use it at higher RPM grinder or other equipment. About JDK: JDK has been engaged in manufacturing and exporting worldwide quality diamond tools since 1995. JDK products include a series of Cutting, Grinding, Profiling and Milling tools for processing hard and fragile materials, such as Natural Stone, Ceramic Tile, Concrete etc.
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