Review on 🛠️ QWORK 40 200mm Adjustable Recessed Sheetrock: Achieve Customizable Perfection with Ease! by Mark Sutovsky

The instruction page for the tool is not very good. And you must be careful to follow the blade alignment pattern. My blades were installed as NO-NO as stated in the instructions. The instructions don't say anything about the two screws on the outside of the bar that hold the blades, but I learned about them quickly. If the screws are not tightened (they don't seem to do anything - I don't know why they are there) they will loosen during operation and start rubbing against the inside of the plastic casing, disrupting the tool's operation. It took me 2 full holes to figure out what was going on before taking it apart and tightening the screws with a screwdriver. Another thing is speed. I drilled 6" holes and if I cranked it up too fast, dust would start flying out of the hood. You have to keep a moderate speed and hardly any dust comes out. Drilled 10 holes in 3/4" drywall with no problems. DEFINITELY worth the money.