Keep your Festool sander or jointer running at peak performance with the genuine Festool 492629 carbon brush set. If your tool experiences power drops, intermittent running, or heavy sparking, replacing worn parts with this pair of brushes instantly restores full torque and constant operating speed. Designed for an exact fit, they install smoothly into compatible tools such as the Festool ro 125 E, ro 125 FEQ, ro 150 E, and df 500. The built-in auto-stop function automatically shuts off the motor when worn, protecting the armature and commutator from damage.