All metal construction for durability and reliable performance | Plastic base protects your desk and gives a non-slip surface | Also allows for large waste storage | Easier to use, light force operation to do the large, heavy duty jobs with ease | Punches holes of 5.5mm diameter - 80mm apart | Heavy Duty and Maxi have a switch to lock handle down for compact storage and a strong metal casing for extra strength | Features a click stop paper guide