Milwaukee M18 FUEL Bristle Brush Attachment for QUIK-LOK Attachment System. Milwaukee M18 FUEL QUIK-LOK Bristle Brush Attachment is powered by the MILWAUKEE M18 FUEL Power Head w/ QUIK-LOK and is compatible with the M18 FUEL QUIK-LOK Attachment System. Milwaukee bristle brush's optimized guard design offers the best material containment. QUIK-LOK Attachments feature protected drive shafts for increased durability against drops and storage elements. Bristle brush attachment also features optimized gearing to manage the cordless MILWAUKEE M18 FUEL Power Head RPM output specifically for this attachment.