Binder Staples 4-ring A4 100 mm black DON256

Binder Staples 4-ring A4 100 mm black DON256 is a four-ring binder designed for A4 punched paper with a 100 mm spine capacity. The binder's black cover provides a neutral, professional look and the four metal rings secure documents for storage and frequent reference. It is made to accommodate standard A4 punched sheets, holding large volumes such as manuals, reports, and reference materials while keeping pages aligned and protected.

Advantages

The binder offers stable document retention with four evenly spaced metal rings that reduce page shifting. Its 100 mm spine provides substantial storage for thick documents without excessive bulk. The black exterior is resistant to showing light wear and integrates easily into a range of office and home environments. The construction supports frequent opening and closing and keeps punched paper flat for easier reading and photocopying.

Suitable for

• Office filing of reports, contracts and reference materials
• School or university course materials and handouts
• Home organization of manuals, warranties and household records
• Archiving project documentation and technical drawings

Key specifications

• Format compatibility: A4 punched paper
• Ring type: four metal rings for secure binding
• Spine capacity: 100 mm for large document volumes
• Exterior colour: black
• Design: lever or mechanism suitable for repeated use (metal construction)

How to use

Open the binder mechanism according to the built-in release method, align punched sheets on the ring posts and close the rings until they lock. For best results, stack pages evenly and avoid overfilling beyond the 100 mm capacity to prevent strain on the rings and cover. When removing or rearranging pages, open the rings fully to avoid tearing punched holes and close them firmly to maintain alignment.

Usage recommendations

Store the binder upright on a shelf to preserve the spine shape and avoid pressure on the rings. Use dividers or index tabs to separate sections for faster retrieval. For archival storage, place the binder in a dry, moderate-temperature environment away from direct sunlight to reduce fading and warping.