The Ars Tech A3 Size Spiral Binding Machine is a heavy-duty manual binding tool optimized for larger A3-sized sheets (11.7 x 16.5 inches / 29.7 x 42 cm). It features a sturdy metal construction with precision-engineered steel punches, capable of punching 18-20 sheets in a single slot through multiple holes for efficient spiral binding. Ideal for high-volume professional use, this machine offers enhanced stability with a reinforced base and is widely applied in printing, publishing, and large-format document preparation. Its compact yet robust design measures approximately 50 x 20 x 35 cm, ensuring durability and ease of use in office or workshop environments.