Grinding head diameter: 3.175 mm. Locating cover dimensions: 60 x 42 mm. Easy screw-on mounting on rotary tool. It is safe when you use the Dremel with it. Used for attachment of drill bit, milling machine and others. Very easy to use and maintain. Large window provides excellent visibility for better control. Allows precise cutting in wood, metal, PVC, etc. Suitable for wood, plastic and other soft materials, carving, engraving, hollowing, chamfering, slot, bore, etc. Materials: steel and plastic. Color: black and silver. Diameter of the grinding head: approx. 3.175 mm. Cover dimensions: approx. 60 x 42 mm. Position cover for attaching drill grinders, milling machines, tools, grinders with tool with screws, can be directly on the card holder in rotary grinders, and positioning. Usage: suitable for wood, plastics and other soft materials, carving, engraving, hollowing, chamfering, slotting, boring, etc. Installation steps: Screw the nut and install the wood cutter. Install the cutter locator Set the cutter to the same plane as the locator, and don't forget to re adjust the balance Adjust the depth according to demand Contents: 1 location cover. 4 bits. 6 wood cutters.