One-piece Ceiling Aluminum Splint Round Hole Opener, Honeycomb Gypsum Board Portable Manual Hole Positioning Compass Knife ,Easy to Install

1. Stainless steel material, portable, lightweight and 2. Integrated ceiling, honeycomb board and gypsum board are suitable 3. Quick opening, convenient and labor-saving 4. The tool holder has a scale, directly marking the radius size 5. Rotate the screw to quickly adjust and lock