Keyhole saw blade or sabre saw blade for a power tool

An integrally formed saw blade for a power tool, comprising:

• a cutting edge extending along an axis from a distal front tip of the saw blade to a proximal rear portion of the saw blade, the cutting edge including a first portion with cutting teeth and a second portion with no cutting teeth;
• a lateral edge extending along the axis from the distal front tip of the saw blade to the proximal rear portion of the saw blade;
• a blade portion having a first maximum height defined by the cutting edge and the lateral edge, the blade portion terminating at a proximal corner defined by the lateral edge;
• a fixing shank having a second maximum height defined by the cutting edge and the lateral edge, the fixing shank terminating at the first portion, the second maximum height less than the first maximum height;
• a transition region extending from the fixing shank to the blade portion;
• and
• at least two impressions formed in the transition region and not extending into the blade portion, the at least two impressions spaced apart from one another.