[Drilling Function]: The Hinge Drilling Jig Has The Function Of Drilling Pivot Holes For Hinge Screws. The Distance Between These Holes Is 46 Mm, 47 Mm, 48 Mm Or 52 Mm [With Depth Stop]: The Hole Diameter Of The Hinge Drill Guide Is 35 Mm. A Depth Limiter Can Be Fixed On The Tool Holder To Avoid Drilling Too Deep. The Depth Is Limited Between 15 Mm And 45 Mm. You Can Also Remove The Stopper To Get Unlimited Depth [Special Design Tips]: The Tip Of The Invisible Hinge Drilling Jig Is Specially Designed To Drill The Holes Cleanly, Which Is Very Suitable For Drilling Hidden Hinges And Door Locks [Easy To Use]: Easy To Use With Any Exercise. Using The Invisible Hinge Drill Guide, You Can Easily Drill Holes In The Cabinet Door Or Table. Hidden Hinge Jig Is Suitable For 35Mm Hinges And Also For 26Mm Hinges [Multi-Purpose]: Hinge Drilling Jig Is Suitable For Drills, Pistol Drills, Bench Drills, Vertical Drills, Portable Electric Drills, Vertical Electric Drills And Moving Belt Magnetic Drills, Etc.