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With the Spit 052977 cleaning brush, you thoroughly clear dust and debris from drill holes in concrete and masonry. Residual drilling dust severely compromises the holding power of both chemical and mechanical anchors. Fitted with durable stainless steel wire bristles, this brush scrubs the borehole walls effectively to ensure optimal adhesion. Featuring a 30 mm diameter and an overall length of 120 mm, it is built for demanding installation tasks. Thanks to the practical internal threaded connection, you can quickly attach it to compatible extension rods or handles to reach deep holes effortlessly and guarantee reliable anchoring performance on site.