Description: Powerful: This kind of is powered by drill bit with core spindle, helping to grind and sharpen the drill bit, making your drill bit work better. Labor-saving: You just need to install the sharpener to the drill bit, and put the bit to the grinder, it will polish your tool automatically, prolonging the service time of the drill bits. Portable: This mini grinding wheel is easy to store and carry, you can place it in your tool case without occupying so much space, not easy to make trouble for you. Long-lasting: The small is made of plastic, sturdy and durable, serving you for long-term use without being cracked or damaged. Replacement: The grinding wheel is replaceable, you can change the old one easily after using it for a long time, and there are several types for choosing, you can order according to your needs. Specification: Material: ABS. Color: blue, orange. Size: show as pictures. Type 3: 2pcs grinders, 2pcs grinding wheels. Type 4: blue and grinding wheel. Type 5: orange and grinding wheel. Note: Due to the light and screen difference, the item's color may be slightly different from the pictures. Please allow a slight deviation for the measurement data and make sure you do not mind before ordering. Package Includes: Type 1: 1 Piece Grinder(with 1 Piece Wrench). Type 2: 2 Pieces Grinders(with 2 Pieces Wrenches, 2 Pieces Grinding Wheels). Type 3: 1 Piece Grinder(with 1 Piece Wrench, 1 Piece Grinding Wheel, 2 Pieces Buckles) Type 4: 1 Piece Grinding Wheel.