Drilling machines; rock drilling machines; ground drilling machines; ground drilling apparatus [machines]; well drilling machines; drilling hammers; down-the-hole drilling hammers; drilling tools for use with machines; parts and fittings for drilling machines and drilling tools; down-the-hole drilling tools; drilling heads [parts of machines]; drilling bits for drilling machines; drilling bits [parts of machines]; rock bits for drilling machines; down-the-hole drilling bits [parts of machines]; drill bits for rock drilling [parts of machines]; drilling bits for drilling hammers; button bits [parts of machines]; drill bits for well drilling machines; adapters for machine tools; adapters for tool bits [parts of machines]; adapters for button bits [parts of machines].

vocational education; Education services