Review on 🔩 Ultimate Precision: 35mm Concealed Hinge Jig with Clamp - Forstner Drill Bit - Drilling Guide - Hole Punch Locator Kit - Woodworking Cabinet Door Installation Tool - High-Grade Aluminum Alloy by Chris Bailey

I sent the cheap plastic back because 6mm of edge offset gave me 2.5mm. On this one the mechanism was adjustable but there was no marking to tell me how much offset the positions would give me. I had to do it by trial and error. The Forstner bit that came with it was blunt. I had to apply STRONG pressure which led to the discovery of a depth sleeve design flaw. The stop clutch worked fine, but this device works by compressing a spring. This spring is unsupported, allowing the coils to slip apart, allowing the tool to cut deeper than intended. Finally, for a tool much more expensive than its counterparts, it lacked the template feature for screw holes.