This Adjustable Skirt Guard allows the user to change the depth as the Type 11 Cup Wheel is worn away due to the grinding process. For use with 5 inch Type 11 Armor and Flared Cup Wheels with Milwaukee Grinders 6072, 6078, 6065-6, 6066-6, 6067-6, 6068-6, 6096, 6098, 6022, 6062, 6082, 6084, 6086, 6088, 6089, 6090,6102 and 6104. Hand screwdriver is required to assemble this guard to the tool. Use of nylon washer 45-88-8465 is recommended to assist in removing the threaded cup wheel from the spindle.