The Proxxon Mini Grinder is light weight, manuverable and is great for small to medium sized projects. It uses 2" discs with a 10mm arbor hole and features a "long neck" cast aluminum head with a gear drive. The 100W variable speed motor ranges from 3,300 to 13,000 rpm for smooth operation. It weighs 1.2 lbs., and measures 11". This mini grinder comes with a storage case, 60 grit AOL grinding disc, 100 grit sanding disc, and metal cut-off wheel.