Metabo GE700 606303420 3-Inch 6-1/5-Amp Die Grinder No load speed 7000 - 27000 /min Collet bore of collet chuck 1/4-Inch The multi-talented one: with extended grinding spindle (mounted on double ball bearing in solid steel tube); ideal for grinding and sharpening in difficult to reach places Auto-stop carbon brushes Thumbwheel for preselection of speed