The DEWALT DWA54034 SDS Plus 3/4-inch Hollow Bit is part of DEWALT’S Perform & Protect product line, minimizing users’ exposure to dust while drilling. 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. 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. Part of DEWALT’s complete cordless anchoring solution. Specs: 3/4″ Diameter, 14.5″ Length, Usable length 9.75″. Includes: 1 Bit.