A rotary file is frequently used to remove _____.

Definition: Machine that forces current back through a battery to restore the charge on the cell plates and reenergize it from a discharged state.

Definition: Device used to remove (raise) an engine from or install (lower) an engine into a vehicle. It has a hydraulic hand jack for raising and a pressure release valve for lowering.

Definition: Case-hardened steel socket that must be used with air and electric impact wrenches. It has a black matte finish and is thicker and much stronger than conventional chrome-plated sockets.