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Keywords from Image Description:
wider jednogryzowy typu S. en Drill bit cone type Used in drilling boreholes of diameter mm in semihard rocks Image taken in Warsaw Museum of Technology pl wider jednogryzowy typu Suy do wiercenia otworw eksploatacyjnych geologicznoposzukiwawczych rednicy mm skaach rednio twardych Eksponat warszawskiego Muzeum Techniki own Olaf