7-speed adjustable control: This water-cooled electric knife sharpener features variable voltage from 12V to 24V and a 7-speed setting that reaches up to 3,350 RPM. It provides precision for detailing, polishing, and heavy-duty grinding in both wet and dry modes. 360° multi-angle flexibility: Equipped with a durable bamboo-jointed universal tube, this sharpener allows for effortless multi-angle adjustments. The water flow control switch optimizes coolant adjustment for smooth operation as a versatile wet and dry bench sander. Forward and reverse switch: Easily switch rotation directions with a single button, making it ideal for intricate edges, curves, or stubborn materials. This feature enhances efficiency and control without the need for manual flipping. Powerful motor: Built with a premium copper-wound motor, this disc grinder delivers high torque, quiet operation, and long-lasting durability. It is designed to run cool under load, ensuring reliability without the risk of burnout. Complete sharpening kit: The kit includes 10 pieces of 150mm sandpaper discs with a 45mm center hole, featuring various grit options suitable for coarse grinding to mirror polishing. The water-resistant, high-density abrasive grains ensure fast cutting and superior finishes for all projects.