Milescraft 1318 Drillmate Portable Drill Guide - Multi-Angle Attachment Compatible With Most 3/8 In. Accessories Self-Centering Base Readouts

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