When you strike the grip end with the hammer (apply an impact), the force changes to the rotational direction.
●It is effective when loosening tightly tightened or rusted screws.
●Can be used in both tightening and loosening directions.
●Replacement parts available include the main body ( SD30-B ), bit holder ( SD30-8H ), cross bits ( SDP-1 to 3 ), flathead bits ( SDM-1.0 to 1.8 ), short cross bits ( SDP-1S to 3S ), short flathead bits ( SDM-1.0S to 1.8S ), and blow case ( SD6A-P ).