18MM AND 12MM APERTURE: This dual hole puncher has hole diameters of 8mm and 12mm, making it easy to handle both fine operations and large hole requirements, providing greater flexibility and applicability. 2PNEUMATIC DRIVE: This puncher adopts a pneumatic drive system, with a pressure requirement between 0.40.6MPa and an 8mm air inlet diameter, ensuring strong and stable punching, improving punching quality. 3ALUMINUM ALLOY: This pneumatic hole puncher is made of excellent aluminum alloy with anodized finish, wear resistance, rust resistance, and erosion resistance, greatly extending the service life of the product. 4FIXING LOCK HOLE: This pneumatic punch adopts 3 point fixed lock hole structure, for fixing 5mm diameter countersunk screws. The punching process is accurate and efficient, greatly saving you time and energy. 5WIDE APPLICATION: This dual hole punch is compact and easy to use, suitable for edge banding and punching, woodworking projects, various craft projects, etc., for thin card, hard film, paper, thin veneer and other materials. Item Type: Edge Banding Hole Puncher Material: Aluminum Alloy Air Pressure: 0.4-0.6MPa Air Inlet Diameter: Approx. 8mm / 0.31in Hole Diameter: Approx. 8mm / 0.31in, 12mm / 0.47in 1 x Edge Banding Hole Puncher Have a great time shopping!