Snappy plug cutters produce a tapered plug, so you get a tight fit with no glue needed. The chamfered nose makes it easy to get the plug started into the bore. Four precision-milled angles on each of the four flutes ensure a smooth cut and a tight-fitting, consistent taper. Heat-treated to provide excellent wear resistance and a long cutting life. Drive Shank: 1/4? Hex Power Bit Shank Plug Size: 1/4