Cut Diameter: 1/2"Overall Length: 3-1/2"Flute Length: 1-3/16"Shank: 1/2"Pilot Panel Bit Has A Drill-Through Point That Plunges Through The MaterialUsed For Window And Door Cutouts In Abrasive Insulation Materials, Plywood And PanelingSingle Flute Allows For Faster Feed RatesConcave Grind Offers A Faster CutMicrograin Carbide Tips Provide Superior Wear Resistance And Long Life