Makita XRH011X 18V LXT Lithium-Ion Brushless Cordless 1-Inch Rotary Hammer Kit Accepts SDS-PLUS Bits with HEPA Vacuum Attachment (Discontinued by Manufacturer) Built-on HEPA Vacuum The built-on vacuum attachment captures concrete dust during drilling and is activated by the tool for operator convenience Vacuum powered by separate motor to maintain tool drilling performance, and provide a 2-second delay to capture remaining concrete dust Efficient HEPA filtration system captures 99.75% of particulates .3 microns and larger Efficient BL Brushless motor is electronically controlled to optimize battery energy use for up to 50% longer run time per charge