PRO GNF18V-40 Wall chasers | Powerful cordless wall chaser delivering up to 1900 W equivalent corded power* with EXPERT 18V 8.0 Ah or higher batteries, Superior control in all positions thanks to ergonomic handle layout and balanced design, Precise cutting guidance with baseplate rollers and clear cut-position markings, Enhanced user protection with efficient dust extraction, brake function, and restart protection