Clips, Document Binding Combs - GENIE plastic binding coils, 8 mm diameter, black, pack of 25 pieces. Designed for 21-ring binding systems (American standard) for DIN A4. Estimated binding capacity up to 85 sheets (80 g/m²). Made of professional-grade plastic for durable, removable/reversible binding of presentations, planners, photo albums, and documents. Compatible with GENIE binding machines (e.g., CB 800, CB 820, CB 850) and other 21-ring machines. Packaged in wholesale retail packaging (25 pieces).