- Punch Drill Specifications: - Punching Lengths: 33mm (1.3 inches) and 21mm (0.83 inches) - Punching Diameters: 3.5mm (0.14 inches) and 2.5mm (0.1 inches) - Shank Diameter: 11mm - Total Lengths: 70mm (2.75 inches) and 65mm (2.56 inches) - Key Benefits: - Designed to efficiently punch tags, wall calendars, desk calendars, books, and handbags. - Compatible with various materials including ordinary paper, offset paper, coated paper, grease film paper, leather, and fabric. - Constructed for durability with overall quenching, providing high hardness and fracture resistance. - Features a 90-degree inner chamfer opening for improved edge sharpness and strength, resulting in 80% less resistance compared to traditional methods. - Practical Applications: - Perfect for crafting projects, allowing you to create precise holes in tags and calendars easily. - Ideal for bookbinding or customizing handbags with professional-quality punch holes. - Useful in office settings for organizing documents with punched holes for easy binding or hanging. - User-Friendly Operation: - Ensure that paper is laid flat during punching for optimal results. - Regular lubrication of the punch drill is recommended for smooth operation. - Use a slower speed for smaller pinholes to maintain precision.