1. quality material: The small electric belt sander Work Sharp knife sharpener is crafted from metal, resistant to rust and wear, ensuring durability. The sanding belt features a beveled surface with a 15degree tilt angle, designed to sharpen knife edges effectively. 2. Plus kit: By attaching a grinding wheel and buffing disc to the left and right sides of the belt sander, it can be transformed into a mini grinder. Combined with speed adjustment, it is an tool for jewelry making, resin artwork, and knife crafting. 3. 7speed adjustment: Slide the power supply's slider to access 7 speed settings, allowing seamless switching from low to speeds. Press the button beside the power supply to reverse the sanding belt's direction. 4. Powerful motor: Equipped with a fullcopper motor offering torque, robust power, and low noise. It delivers 4000 to 9000 RPM, making it suitable for various tasks, including metalwork, jewelry, resin, and knife sharpening.