this invention relates to a tool device . in the first embodiment , the device comprises a body defining a grip - like , handle , a tool holder joined to the body , a piston and valve assembly disposed in the body adjacent one end thereof , a conduit extending from the valve , a piston slideably disposed on the conduit , as well as means for supplying the device with a fluid under pressure . by the use of the first embodiment of the present invention , the piston is caused to reciprocate in the body thereby producing a hammer - like action . in the second embodiment of the invention , a similar tool handle is used in combination with a tool holder and motor assembly . the assembly includes means for selectively joining a tool to the assembly , and a rotary motor means having a plurality of radially disposed movable vane members , as well as means for introducing and removing a fluid from the motor . by the use of the second embodiment of the present invention , rotary action such as that associated with a rotary sander can be achieved .