Keyhole Saw Blade

A narrow strip of flexible steel tapering to a point at one end and having a continuous series of cutting teeth along one edge. Width at the butt end must not be more than 1 inch (25.4 mm) nor less than 1/2 of aninch (12.7 mm). It is designed with accommodations at the butt end for attachment of a straight grip handle, pistol grip handle, or open grip handle.