Ring Binder Donau Master lever A4 50 mm copper (PBSX0247)

Donau Master lever ring binder A4 50 mm in copper color is designed for organised storage and frequent use. The binder accommodates punched A4 documents with a 50 mm spine, providing capacity for large document sets such as reports, manuals and project files. Its lever-operated ring mechanism enables secure closing and straightforward opening for quick access to contents, while the durable cover material supports repeated handling in office, school or home environments.

Advantages

The lever mechanism offers reliable locking of punched sheets and smooth operation for adding or removing pages. A 50 mm spine provides high capacity for thick document sets without folding or damage to pages. The copper-coloured exterior gives a professional, uniform appearance and helps with visual organisation on shelves. Robust construction and reinforced edges increase longevity during daily use.

Suitable for

• Archiving reports and project documentation
• Organising manuals and training materials
• Storing homework, school handouts and study materials
• Keeping financial documents and invoices in order

Key specifications

• Format: A4
• Spine width: 50 mm
• Ring type: lever-operated mechanism for punched paper
• Colour: copper
• Capacity: suitable for several hundred punched sheets depending on paper weight
• Cover: durable material with reinforced edges for frequent handling

How to use

Open the lever mechanism to release the rings, insert punched sheets onto the rings and close the lever until it clicks to secure the documents. To rearrange or remove pages, open the lever fully, move sheets as needed and close again. Store the binder upright on a shelf or flat in a drawer; label the spine or front cover for faster identification.

Usage recommendations

For optimal performance, use standard punched A4 paper with compatible hole spacing and avoid overfilling beyond the nominal spine capacity. Keep the lever mechanism clean and avoid forcing it if resistance is felt; inspect periodically for wear if used daily.