Feature●Outer diameter x thickness x hole diameter (inches): 4.9 x 0.14 / 0.18 x 0.99 inches (125 x 3.5 / 4.5●Grinding grain: GC●Grit size: 16●Hardness: P●Binding Material: B●Reinforcement: 2F●Maximum Period: 10.9 ft (4,300 m) per minuteDescription
Smooth grinding with little burn, and clogging resistant structure for low vibration use.
Back of Body: Circular wave.