ELBA Strong-Line lever arch file can be used year after year. The solid ring binder is noted for its double protective PP film base, which both protects the shelves and the Lever Arch File itself from wear and tear. The mechanism is also so solid that it can withstand many years' use and a heavy weight load. In recognition of the fact that products are used by customers for many years, concept includes the possibility of purchasing loose spine labels in matching colors, as well as to design and print out your own spine labels using the ELBA Print programmer, which is free and easy to use.The quality is not only apparent in the fact that the durability of the ring binder is top notch. Hamelin has taken things a step further and also looks after your furniture. Many Lever Arch Files have metal trim to protect the base. ELBA Strong-Line therefore has a double soft PP film base, which protects both your lever arch file and your furniture.