Foredom Belt Sander Attachment All metal quality-machined device attaches with ease over the top of a Foredom #30 hand piece with supplied hex key. Sander has 3 permanently lubricated ball bearings. Use to power sand and smooth metal, wood, acrylic and composite materials. Unit comes with a 180 grit belt installed and is supplied with 3 additional belts each in grits 100 – 180 – 240. Can be used freehand or mounted into a hand piece holder for more control of the work piece. Measures 4 7/8” long x 1 3⁄4” wide x 2” high. Uses sanding belts measuring 7 x 257mm.