The AccuDrill Precision Drill Guide adds a whole new level of accuracy to your standard power drill. The AccuDrill is great for angle drilling, doweling, plug cutting and even edge sanding. With the easy-to-use protractor scale, you can adjust the Drill Guide in 5 degree increments from 0-45 degrees, left and right. In addition, V-Guides on the base permit drilling through dowel or other rounded stock. Attaches to all 3/8" and 1/2 power drills. Folds for tool-box storage. For use with 3/8" and 1/2 power drills. Includes 3/8" capacity chuck with key. Protractor scale adjusts body from 0-45 degrees left and right, in 5 degree increments. V-Guides for drilling through rounded stock or dowel. Positive stop for accurate drill depth. Centering channel on base for edge drilling. Folds flat for storage.