Abstract: A cutting segment adapted for mounting on a circular cutting wheel is disclosed, and which is characterized by its ability to provide a grooved cutting surface that accurately guides the circular wheel to which it is attached through stone, concrete or the like. The cutting segment includes a unitary solid metallic body that has a top wall which defines a cutting surface, a bottom wall opposite the cutting surface, two opposite flat side walls and two opposite end walls. At least one of the end walls includes a recessed channel which extends between and intersects the cutting surface and the bottom wall. The channel defines a central portion on the cutting surface that is contiguous with the intersection of the channel, and two flanking portions on opposite sides of the central portion.