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 6080-20, 6081-20, 6082-20, 6086-20, 6088-20, 6089-20. No tools are required to assemble this guard to the tool. Flange 43-34-0840 is required and the use of nylon washer 45-88-8465 is recommended to assist in removing the threaded cup wheel from the spindle.