The BOA 340025 is a 25mm diamond tip drill bit, offering maximum drilling capacity for the largest fixtures, substantial pipework, and heavy-duty installations through glass and ceramic surfaces. This professional-grade size is essential for major plumbing waste runs, large extractor ducting, and substantial cable penetrations. Featuring a vacuum brazed diamond tip with welded construction, this 25mm bit represents 10 years of development expertise, delivering greater strength and endurance for
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