Our two-step Tectus Hinge Template is the fastest, easiest and most accurate way to rout the two-step mortises required for invisible hinges. Made of 1/2" phenolic for heavy duty use. Includes a Double Track for mounting the jig and clamping to your work. Clamps not included. Optional 4512 Flip Stop mounts on an optional Double Track for quicker part indexing. Optional longer Double Tracks (up to 94" - 4094) available to mount multiple two-step Hinge Jigs and Flip Stops. Optional 6507 Self-Centering Drill centers itself in the invisible hinge screw mounting hole for a perfectly centered 7/64" pilot hole. Model Comparison Model Hinge Mortise Size Jig Size Included Track Required Bit 8652 Tectus 340 3D 28mm wide × 131mm long 5-5/8" × 7-3/4" 8" Double Track 1/2" spiral, 1-1/2" cut length (15409) 8653 Tectus 540 3D 32mm wide × 200mm long 5-5/8" × 11-5/8" 12" Double Track 1/2" spiral, 2" cut length (15410) 8654 Tectus 640 3D 32mm wide × 240mm long 7-5/8" × 15-5/8" 16" Double Track 1/2" spiral, 2" cut length (15410) All models require a 3/4" OD Bushing & Locknut (5032K or equivalent, sold separately) If using your own bushing, make sure the nose isn't over 3/8" long Hinge setback is built-in according to the manufacturer's specs Jig clamps to the work (no nail holes); both the long/shallow and short/deep mortises are cut without moving the jig or part Has two retractable stops for the short/deep mortise Product Documentation