Abstract: A saw blade assembly for a power saw includes a housing blade assembly having a plurality of saw teeth depending therefrom and a blade disposed within the housing blade assembly, the blade and the housing blade assembly being drivable in opposite directions by a reciprocating driver mechanism.

Abstract: A powered circular saw tool (2) includes a tool body (4), an attachment for allowing a circular saw blade (8) to be attached to the tool body (4) in use, and a base plate (6) for supporting the tool body (4) on a workpieee or surface in use, The tool body (4) is capable of undergoing pivotal movement relative to the base plate (6) to allow a circular saw blade (8) to be pivoted to a required depth of cut with respect to a workpiece in use. A selector allows selection of the different operational modes.

Abstract: A saw blade assembly for a power saw includes a housing blade assembly having a plurality of saw teeth depending therefrom and a blade disposed within the housing blade assembly, the blade and the housing blade assembly being drivable in opposite directions by a reciprocating driver mechanism.

Abstract: The present invention discloses a kind of universal mounting hole means for different tool heads of electric tools, which are disposed on a mounting portion of the tool head, comprising a central hole and a plurality of long and narrow limiting holes which orient radially surrounding the central hole and disposed in distance with each other. Compared with the prior art, the present invention is applicable to various kinds of structures of the mounting seat on electrical tool and is more universal. It takes much convenience to people when changing different tool heads of electric tools, and it is benefit for storing.