The HEPA Dust Extractor is equipped with HDI standard extraction head for use with HDI setting tools for drop-in anchors. Virtually dust-free and OSHA 1926.1153 table 1 compliant drilling with TE 4 rotary hammers especially for overhead application. The Hilti dust box is HEPA-ready - for use with US HEPA certified filter which is included. Easy, one-handed attachment - can be fitted quickly to your TE 4, no tools needed.