Great!
Does what I bought it for, grinding, sanding, & polishing gemstone slabs with water without risk of shock. Has very rare variable speed for battery powered unit, you need slower speed for sanding & polishing. You need the diamond pad tools for doing this. Battery lasts well with a charge, & the unit doesn't bog down. Seems well-made and thinner, lighter weight than many I tested, keeps the arm from getting tired too fast. I haven't tried it for normal angle grinder activity yet, but expect it to do well.
Verified purchase: YesCondition: New