Restore peak performance with the AIXIHZ 8-pack carbon brush replacement. Direct fit for rotary tool models 100, 200, 285, 300, 395, 410, 595 (Type 4,5,6) and compatible with part #90930-05. Timely replacement of these wear components maintains consistent power, extends tool life, and helps prevent costly motor damage. Simple installation requires no special tools—ideal for crafting, woodworking, and detailed repair work.