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