The Vitrex 18mm Diamond Drill Bit offers a larger diameter specifically designed for substantial plumbing penetrations and sizeable fixture installations through hard tile surfaces. This size is ideal for drilling holes for waste outlet pipes, larger shower components, significant electrical conduits, and heavy-duty mounting systems in demanding tiling applications. Featuring diamond grit edged cutting technology, the 18mm bit excels at drilling porcelain, granite, quarry, stone, marble, terraco
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