OSHA Table 1 compliant on-board dust extractor includes a filter cleaning mechanism designed to help maintain optimum suction efficiency Extractor is powered by separate motor allowing the rotary hammer to consistently maintain peak drilling performance Captures concrete dust during drilling; activated by the tool and provides a 3-second delay to help capture remaining dust Efficient HEPA filtration system captures 99.97% of particulates .3 microns and larger Extraction extension allows drilling up to 3-1/2" deep and up to 15/16" diameter holes › See more product details