This BOSCH GDE18V-26DB15 18V SDS-plus Bulldog Mobile Dust Extractor Kit combined with a CORE18V Compact Battery allows users of the Bosch 18V D-handle Bulldog™ to control dust during drilling applications at the jobsite to achieve maximum mobility plus runtime. The BOSCH GDE18V-26DB15 18V SDS-plus Bulldog Mobile Dust Extractor Kit provides a true cordless solution when used with the 18V 1 In. GBH18V-26D Bulldog™ rotary hammer. It features a HEPA filter, helping users move toward compliance with OSHA silica dust regulations. BOSCH GDE18V-26DB15 18V SDS-plus Bulldog Mobile Dust Extractor Kit is also compatible with the corded 11255VSR, GBH2-28L and RH228VC Bulldog™ rotary hammers. The attachment comes with two Dust-Eye options (one small, one large) and a 4 In. extension. The dust canister capacity can accommodate up to 20 holes using a 1/2 In. diameter bit, drilling 2 In. deep into concrete. BOSCH GDE18V-26DB15 18V SDS-plus Bulldog Mobile Dust Extractor Kit features a CORE18V 4.0 Ah Compact Battery, which have next-gen Li-ion 21700 cell technology for optimal performance in a lightweight, high-power battery. Each GBA18V40 single-layer battery matches the power from the original two-layer 4.0 Ah battery with improved performance per cell.