After trying this new pneumatic tool, I was thoroughly impressed with its power and versatility. It`s small enough to get into tight spots yet powerful enough to handle even the TOUGHEST jobs.The sanding and grinding attachments are easy to switch out, making it the perfect tool for polishing and smoothing surfaces. The only downside is that it requires an air compressor to operate, but this is to be expected with any pneumatic tool. Overall, I highly recommend this tool to anyone in the industrial and scientific fields..