http://tinyurl.com/n4pu7ys
Metabo GE710 Compact 13000 to 34000 Rpm 6.4-Amp Die Grinder Compact Variable Speed, 710-watt
Electronic safety shutdown of the motor if the tool jams
Thermal overload protection
Auto-stop carbon brushes
Hardened and ground collet chuck for precise concentricity of tools in use
Collet bore of the collet chuck 1/4 "