Review on 🔊 Enhanced Performance: Adjustable 40-200mm Recessed Speaker Ventilation for Optimal Sound Output by Warrick Infinite

Used to cut holes for 143.6mm, 74mm and 40mm speakers. Don't rely on the tool's measurement grid markings—sometimes they're off by half an inch and inconsistent. Luckily, you can use the included tape measure to fine-tune blade spacing. An Allen key or Allen key tool is junk. It came off after a few uses - very soft material. Be sure to check the alignment of the cutting blades. Mine were installed incorrectly when unpacked. For rough work when you need a tight enough hole this is a great tool. For finer work that requires some precision it's still pretty good - you just have to take your time. The blades are sharp but like butter through my 1.5mm thick plastic speaker mounts.