Astro Pneumatic ONYX 332 Air Denibber Denibbing Sander, 1-1/4 in Straight HandleThe Astro 332 Air Denibbing Sander uses a small 1. 25" (30mm) pad size for isolated spot focus sanding and dennibbing of clear coats instead of redoing entire areas. What that means is that the main use is to remove dust or debris from clearcoat before buffing. This helps make the job clean and smooth quickly without sanding large parts of the car making it a much faster job. This sander is an orbital sander, not a rotary sander. It is specifically