Versa-Tool SB1O Electroplated Diamond Semi-Round Cutting and Grinding Blade For Rockwell Sonicrafter Compatible with Rockwell Sonicrafter 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