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With its mobile drilling and turning machines ARNOLD is able to realize mechanical drilling services from Ø 3 mm up to Ø 4000 mm. If required the drill holes can be increased through line boring. Overall, drilling depths up to 3000 mm are possible through our special drilling devices with simultaneous internal film cooling. Line Boring is possible up to a length of 18000 mm. Furthermore, we are able to cut current screw threads up to a size of M250.