Whether you are machining steel, wood or dirt, removing material with a machine tool is a well established science. Coarse, large pitch cutters are used for hogging. Removing lots of material fast. Fine pitched cutters are for high accuracy and fine finish. A bulldozer is fine for hogging off a mountain top, but a hand operated shovel may be needed to get a concrete form in the exact right place. Nothing different in the science of microtrench blade designs. Via many miles of trench cut we have been able to balance speed of cut with blade life and cost. You will find our blades will produce a lower cost per foot of any blade on the market.