The Makita Dust Extraction Attachment (196858-4) is engineered to reduce the dust created from concrete drilling when used with a jobsite vacuum (sold separately). The Dust Extraction Attachment fits the Makita 2" AVT® Rotary Hammer model HR5212C. The 196858-4 includes both drilling and demolition boots for greater versatility and multiple applications. The Dust Extraction Attachment is part of Makita's expanding line-up of dust extraction solutions, including the VC4710 Jobsite Vacuum (sold separately).