When used with a dust extractor, DeWALT® hollow drill bit extracts dust while drilling for less dust, fast holes and fast adhesive anchor installation. DeWALT® hollow bit is part of their Perform and Protect™ product line, minimizing users' exposure to dust while drilling. The bit is also OSHA Table 1 compliant. Connects directly to DeWALT® airlock system forming a secure, locking connection between bit and dust extractor.