drilling-tools or other for making or working on holes

Full Title

Making tools or tool parts, e.g. pliers > drilling-tools or other for making or working on holes

Child Classifications

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• B21K 5/04 twisting-tools, e.g. drills, reamers
• B21K 5/06 Dressing, e.g. sharpening rock drills
• B21K 5/08 drifting tools
• B21K 5/10 Forming drill-bit shanks