Makita DX12 Dust Extractor Attachment with HEPA Filter Cleaning MechanismMakita DX12 The Dust Extractor Attachment with HEPA Filter Cleaning Mechanism (DX12) is for use with the 40V max XGT Brushless 1 1 8" AVT Rotary Hammer (GRH01Z, sold separately). The attachment features a HEPA filter engineered to capture 99. 97% of dust particles (size . 3 microns and larger) for improved dust collection and OSHA Table 1 compliance. It is powered by a separate motor allowing the rotary hammer to consistently maintain peak drilling