upgrade kitPackage contains leather hole punch, 2 remaining copper base plates, screwdriver, ruler and sharpening stick. A sharpening stick can be used to remove dust from the hole punch and keep the hole punch sharp; a digital indicator and ruler can be used to quickly and easily determine the exact length and hole diameter; a screwdriver is used to replace the screws on the copper base plate and leather. -6 different size hole punchesInterchangeable diameters: 2mm, 2.5mm, 3mm, 3.5mm, 4mm and 4.5mm. Easy to use, the swivel wheels allow for more size options, saving you money and time by not having to buy new belts. -Anti-slip designThanks to the ergonomic anti-shock and non-slip handle, it is suitable for long-term repetitive work without causing hand blisters. - LeverageDuring operation, you don't need to use a lot of force, because a double lever arm is used. This protects the hand or wrist from stress. Generally speaking, even if the limbs are painful, it is easy to grasp when using it, and it is easy to squeeze when drilling. -MultifunctionIdeal for crafters, artisans and DIY enthusiasts. The oversized hole punch provides better stability and control, and works perfectly on leather, plastic, canvas, paper, rubber, polyurethane, fabric, silk, and other similar materials. sizeHole Diameters: 2mm, 2.5mm, 3mm, 3.5mm, 4mm and 4.5mmMaterial: Mild SteelHandle: non-slip rubberStructure: double lever, labor-savingWeight: 0.5 kg set contains1x Leather Hole Punch1x sharpening stick1x ruler