The DEWALT DCG412 125mm XR Premium Angle Grinder has a powerful fan cooled motor and intelligent variable speed trigger and lock-off switch for enhanced work safety and control It features the XR Lithium Ion Technology and is part of the intelligent XR Lithium Ion Series designed for efficiency and making applications faster The powerful and highly efficient PM58 DEWALT fan cooled motor has replaceable brushes and delivers up to 7000 rotations per minute for fast cutting and grinding applications It has steel cut spiral bevel gears which provide the highest level of durability and low vibration increasing user productivity and the low profile jam pot gear case improves gear durability and ergonomics DCG412M2 2 x 18v 40Ah XR Li-ion Batteries DCG412M2 1 x 18v 40Ah XR Li-ion Battery DCG412N Bare Unit No Battery or Charger Specification No Load Speed 7000min Disc Diameter 125mm Spindle M14 Weight 30kg