Specification:Material: Black Coating HSSAngle: 90/180Degree Quantity: 1pc (optional)Features: - Scope of application: aluminum-plastic profiles, aluminum alloys, all kinds of wood, copper, all kinds of cast iron, ecological wood, plastics.- Suitable for step punching of all kinds of sliding doors and plastic steel windows, all kinds of cast iron, countersunk screws.- Adopt new technology for quenching, aluminum alloy does not stick to the knife.Note:1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order.2.Due to the difference between different monitors, the picture may not reflect the actual color of the item.