Offset Whetstone 7010600925 3M

Realizes speedy polishing(approx. 1.5- to 2-fold the speed of conventional whetstones)and long life(2.5- to 6-fold that of conventional whetstones).PN85938 and PN81148 are dual purpose grinding whetstones which can also be used for cutting while PN65493 is for grinding only.Grinding and cutting work of standard steel and stainless steel.Grain Size (#):36Abrasive:Ceramic abrasive grainOuter Diameter x Thickness x Hole Diameter (mm):100 x 4.2 x 15.00Max Working Rotation Speed (rpm):13750Maximum working peripheral velocity: outer diameter 100mm: 72m/s(4320m/min)outer diameter 180mm: 80m/s(4800m/min)