| 摘要 |
This invention refers to a drill for the perforation of rock and/or materials of consolidated stone origin such as concrete, mortar, etc. to be used in the mining and construction industry. The object of this invention is to provide a type of drill for the perforation of rock and/or consolidated stone materials, totally different to those actually existing in the market, thanks to its new design, which main characteristic is that of reuniting the advantages of integral drill types and disposable drills existing in the market.
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