Glass Technologys dry glass scratch removal discs are the next generation of glass restoration materials. Used exclusively with our Heavy Duty Scratch Hog these unique 8 hole pattern discs are the most effect and efficient materials available on the market to remove heavy damage. Used for large applications with multiple damaged areas this material in conjunction with the Heavy Duty Scratch Hog extracts much of the glass debris through the 8 hole pattern material and into a dust collection vacuum. FOR ANYONE CHOOSING TO USE THIS EQUIPMENT: PLEASE REFERENCE OSHA REGULATIONS FOR YOUR OWN PERSONAL HEALTH AND SAFETY (1910.1000/132). ADDITIONAL PRECAUTIONS SHOULD BE EVALUATED FOR THE SAFETY OF PEOPLE THAT ARE IN DIRECT CONTACT WITH THE REPAIR AREA. ALWAYS WEAR PROPER RESPIRATION EQUIPMENT.