EN 792 applies to hand-held non-electric power tools driven by rotary or linear motors, powered by compressed air, hydraulic fluid and intended to be used by one operator and supported by: -- the operator's hand or hands; -- a suspension, e. g. a balancer. This part of EN 792 applies to hand-held, non-electric power tools fitted with collets and used for grinding and surface finishing and chamfering using mounted points, burrs and files and small wire brushes mounted on shafts. This part lists the significant hazards caused by such power tools and specifies safety requirements valid for different aspects of safety during their foreseeable lifetime. NOTE Grinders without collets for use with cones and plugs with threaded inserts are covered by EN 792-7. Power tools covered by this part of the standard: -- angle die grinders; -- reciprocating files; -- rotary files; -- straight die grinders. Special requirements and modifications on a hand-held power tool for the purpose of mounting it in a fixture are not covered by this part. NOTE At the date of publication no die grinders driven by internal combustion engines are known.