This is a multi-purpose rotary tool. The case is durable and the rotary tool is stable which is a good thing when working with designs in the wood. The six speeds make it great to work with on my wood carving projects. The ergonomic handle makes it easy to handle. This does engrave, sand and polish for me, all in one tool. It as well drill and grind. The magnetic cuff is a handy tool holding the parts you need within reach. It's a handy tool for having all you need in one tool for crafting especially.