Dremel 520 1/2 In. Polishing Wheel is a convenient polishing tool designed with the polishing compound embedded inside the wheel itself. This innovative design features a silicon carbide abrasive combined with a lubricant, which eliminates the need for an additional polishing compound. It simplifies the polishing process while delivering effective results, making it an essential accessory for achieving a smooth, polished finish on various materials. Model Number: 520