both the webbing and the single cutting structure those having ordinary skill in the art will appreciate that the present invention is not limited to embodiments which incorporate the webbing and the single cutting structure further those having ordinary skill in the art will appreciate that the present invention is not limited to embodiments which incorporate only two rows of cutting elements other embodiments may be designed which have more than two rows of cutting elements referring now to fig9 a another disc drill bit 901 in accordance with an embodiment of the present invention is shown disc drill bit 901 includes a bit body 903 having one or more journals not shown on which one or more discs 905 are rotatably mounted disposed on at least one of discs 905 of disc drill bit 901 are first radial row 907 of cutting elements second radial row 909 of cutting elements and third radial row 911 of cutting elements cutting elements of first radial row 907 are located closest to the axis of rotation of disc drill bit 901 followed by the cutting elements of second radial row 909 and then the cutting elements of third radial row 911 the cutting elements of first radial row 907 second radial row 909 and third radial row 911 act together to drill a borehole with a.