Discover the Customizable Punching Hole Tool for Efficient AC Tube Fitting Production. This precision tool, made from high-quality materials like SKD11, DC53, or HSS SKH51, is designed for CNC hole punching machines. It ensures high efficiency and durability for processing tubes from Φ9.52mm to Φ110mm with hole diameters ranging from Φ5mm to Φ22.22mm. Perfect for OEM or ODM services.