Insertion: The cage and the holder are initially lined up to facilitate entry. The wedge-like profi le makes the cage insertion process a straightforward and an easy task. Positionning: The cage is moved to its final location with minimal efforts, thanks to the cage shape and the unique cage holder design & ergonomy. Expansion: The cage holder pushes the slider which expands the cage, opens the opposite side and rebalances the disc space in a strictly parallel configuration. The cage holder The unique, high tech holder allows a perfect cage positioning due to its swivelling feature. It is engineered to always position the cage symmetrically to the sagittal plane and in the medial or front part of the disc space, as desired.