The 3M Hookit™ Microfinishing Film Disc 366L is the top-rated choice in the 3M Microfinishing disc lineup. It boasts a high-quality aluminum oxide abrasive, precisely graded in microns, that is securely bonded to a tough polyester film backing. This combination delivers an exceptional speed in removing material and achieves a consistent surface finish on various materials such as wood, plastic, fiberglass, and metals. It is also highly effective for tasks like paint preparation, coating and corrosion removal, e-coat, and primer.