Perfect for straight or angled drilling, drilling on the edge of a board or on round stockAttaches to all 3/8" And 1/2" Power drills and it also includes a 3/8" Capacity chuck with keyAngle cuts of 45 Degree to 90 degrees, with a built in angle read out in the all metal baseCentering channels built into the bottom of the base, to accommodate drilling any round stock up to 3 inches in diameterAdjustable depth stop and spring action control of the head