Versa-Tool FB1O Electroplated Diamond Semi-Round Cutting and Grinding Blade For FEIN SuperCut Features Compatible with FEIN SuperCut Thick gauge metals and high quality manufacturing techniques insure superior wear tolerance and life Universal arbor allows multiple position settings for slip free operation at varying blade angles Diamond impregnated attachment for demanding grinding, sanding and cutting of hard materials Specifications: Material: Diamond | Application: Fiberglass, Plaster, Porous Concrete | Speed (OPM): 25000