All of the Robit® button bits are manufactured of new 100% recyclable steel. In the environmentally friendly steel production process the CO² emissions have been reduced 80% and 95% of the waste is recycled including the process smoke which is filtered. The new steel grade gives even more uniform properties and improved fatigue strength which is crucial in rock drilling process. Designed for particular applications from soft rock formations to extremely hard conditions. Models: • A – medium and hard rock model • M – soft and medium hard rock model • S, SR – all around model • Se – evolution model for high power and frequency drilling • FF, FFR – Flat Face for medium and hard rock conditions • FF HD, FFR HD – Flat Face Heavy Duty model for more abrasive conditions • DC, DCR – Drop Center model for straighter holes with maximum flushing properties (for soft and medium hard rock for speed drilling) • DC HD, DCR HD – Drop Center Heavy Duty model for more abrasive conditions