This AEROPRO 17315 Rectangular Die Grinder is great for general cleaning, deburring and shaping and feels good in the hand. It develops enough power for most jobs, but not as strong as the ones I have. But this should not be a minus, since this ridge consumes 1 cubic meter. Feet per minute is less air under load and is physically smaller, potentially allowing operation in smaller spaces. the ability to use a light touch when grinding. When using cutting discs, the speed is sufficient to ensure a clean, fast cut. When using other attachments, such as grinding discs or Roloc bristle discs, this straight grinder allows you to reduce the maximum speed using the built in 'adjuster' on the back of the tool body, by simply turning the slotted screw until the desired speed is reached. . This of course reduces the air consumption, but logically also the power output is reduced somewhat. It has an air outlet at the rear that diffuses around the inlet, which prevents chips from blowing in your face while in use, but since the air contains some oil, it will eventually clog the air inlet hose, requiring it to be cleaned after some time operating. If you have large hands like mine, the palm of your hand also collects some of the released oil, which eventually spreads to your palm, making the tool slippery and difficult to hold. I can't call this a design flaw as all similar typical die grinders do the same thing. If there's anything to complain about, it's the often imprecise "instructions" that come with the tool. The advanced view (sic) has some mislabeled parts and the company website is still a work in progress so there is no help in the form of an updated manual. But the box includes two different sized collets, a couple of wrenches, an air fitting and a small bottle of oil to get you started, so it's ready to go almost straight away. I REALLY get annoyed that once the air connector is screwed in the tool becomes too long to fit in the original packaging which makes it convenient to store loose parts alongside the tool. But that's true of every other I've ever bought, so I can't really blame the AeroPro (Zhejiang Rongpeng Air Tools). Like all high-speed pneumatic tools, this one is quite noisy and I recommend earplugs for all but the shortest jobs. It looks like a powerful and handy rectangular grinder and is a bit cheaper than the big brands.