Milwaukee's M18 FUEL? QUIK-LOK? Bristle Brush Attachment is powered by the M18 FUEL? Power Head w/ QUIK-LOK? and is compatible with Milwaukee's M18 FUEL? QUIK-LOK? Attachment System. This attachment's optimized bristle design is great for removing debris like mulch and dirt from hard surfaces and allows for longer life while covering a 23" clearing width. Milwaukee's bristle brush's optimized guard design offers the best material containment. Milwaukee's QUIK-LOK? Attachments feature protected drive shafts for increased durability against drops and storage elements. The bristle brush attachment also features optimized gearing to manage the cordless M18 FUEL? Power Head RPM output specifically for this attachment.