It Has a Metal Frame With Three Butterfly Type Nuts (One Allows to Extend and Fasten the Frame at the Length of the Blade and Two to Hold and Keep the Blade in Place), A Solid Wood Handle with Metal Collar for Added Strength and A Generous Supply (a Full Gross) of Piercing Saw Blades in Six Different Sizes.

Those of Us Who Have Used One of These Before, Know Very Well How Easily These Blades Can Break and How Important it is To Have a Large Supply on Hand to Finish the Job.

Even Though Sometimes Blades Break ... Just Because They Decide to Break, Most Blades Break at the Start of A Cut or While Following a Sharp Curve. In Order to Save Blades, We'd Recommend to Follow Shallow Curves and to Drill Holes one Point Larger Than the Blade Being Used When Going Around Sharp Corners.