excellent tool . very maneuverable . attachment make it versatile . noise level be good . Belt tracking adjustment be accurate . the knuckle guard portion of the handle seem a little skimpy but it have not create any problem . boxy design allow you to lie the tool on its back and use it to sharpen chisel and scraper . the graphite platen get hot after extend use but the tool have not overheate . I would recommend this sander to anyone that be consider a 3 x 21 .