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

Parameter: Product name: Manual stainless steel precise round hole opener Material: Stainless steel Applicable: integrated ceiling, honeycomb board, gypsum board, etc. Opening radius: 1-12CM (adjustable) Hole diameter: 2-24CM (adjustable) Blade: Standard utility blade Feature: 6. Both the blade and the steel needle are replaceable design 7. Can be used as a utility knife