HVAC & More offer a multitude of different saw blades, from Diablo, Freud, Lenox and more. Saw Blades come in four types, flat top grind (FTG), or alternate top bevel (ATB), or a combination of the tow, (ATBR). Finally, the triple-chip grind, which is TCG. All of this is in terms with its shape, teeth or grind.