This part of ISO 11148 specifies safety requirements for hand-held non-electric power tools fitted with collets(hereinafter “die grinders”) intended for grinding and surface finishing and chamfering using mounted points,burrs and files and small wire brushes and other accessories mounted on shanks. The die grinders can bepowered by compressed air, hydraulic fluid or internal combustion engines and are intended to be used byone operator and supported by the operator's hand or hands, with or without a suspension, e.g. a balancer.