The CoroBore 825 XL and CoroBore 826 XL are fine boring devices ideally suited for large diameter boring. The CoroBore 826 XL has a diameter of 538-1275 mm (21.181-50.197 inch), while the CoroBore 825 XL has a smaller diameter of 298-555 mm (11.732-21.850 inch).
These boring devices are made of aluminum that decreases the product weight. They have dimensions suitable for all materials and wiper dimensions that yield excellent surface finish. Their cartridges are specifically designed to provide optimum support.