- 90-degree rotation for easy binding and disassembly: designed to bind multi-page paper temporarily into a booklet, with a 90° turn to the right for convenient removal. - Mid-spine binding with long nails: supports binding along the center seam; paper depth up to 65 mm; wide, thick metal base with a threaded housing for stable binding. - High durability and capacity: binding life up to 20,000 cycles; maximum of 50 sheets per binding or multiple rows; clamps use sharp nails and steel needles made of metal. - Robust construction and ergonomic design: ABS shell with a neat, sturdy profile; comfortable steel body with a precise nail groove; fine workmanship and easy to use. - Practical applications: ideal for binding 40–50 page reports or proposals for meetings; assembling classroom handouts or training worksheets; temporarily binding reference notes on a desk for quick access. - Suitable for desktop use in offices, homes or classrooms.