Drilling function: The hinge drilling jig has the function of drilling holes for hinge screws. The distance between these holes is 46mm, 47mm, 48mm or 52mm. Special Design: The tip of the concealed hinge drilling jig is specially designed to drill holes cleanly, ideal for drilling hidden hinges and door locks. With depth stop: The hinged drill guide has a bore of 35 mm. A depth limiter can be attached to the tool holder to avoid drilling too deep. The depth is limited between 15 mm and 45 mm. You can also remove the plug for infinite depth. EASY TO USE: Easy to use with any sport. With the invisible hinge drill guide, you can easily drill holes in cabinet doors or desks. Hidden hinge clips are available for 35mm hinges and 26mm hinges. Wide range of applications: The articulated drill is suitable for electric drills, pistol drills, bench drills, vertical drills, portable electric drills, vertical electric drills and moving belt magnetic drills.