Precision Drill Guide, Brings Drill Press Accuracy & Versatility To Handheld Drilling Jobs, Drills Accurate Right Angled Or Variable Angled Holes With Built In Protractor Scale, Adjusts 45 Degree In Either Direction Of Vertical Drill Position, Portable & Lightweight, Folds Flat For Toolbox Storage, Built In Depth Stop, Slide Lock For Sanding & Buffing Applications, Anchoring Pins Hold The Guild Securely In Place On Flat Surfaces, Narrow Edges, Or Large Tubing, V-Groove For Positioning Round St Chuck & Chuck Key.