- Easy installation: door hinge insertion jig set with two removable inserts and an integrated stemmer for 3-5" hinges with round or square corners. Align hinged doors with a radius of 1/4" or 5/8" easily. - Precision placement: self-centering hinge insert and an integrated depth gauge ensure accurate hinge placement and depth for doors and not frames. - No chisels required: cutter gauge creates perfect cut-outs from the hinge template for effortless installation. - Robust, surface-friendly design: sturdy construction with double-sided non-slip silicone pads provides precise hinge positioning without surface damage. - Practical applications: ideal for installing interior doors on standard frames, replacing hinges on existing doors without chisels, and performing repeat hinge mortises when working on multiple doors in a remodel.