With the Makita CB-440 carbon brush set, you instantly restore the power and dependable operation of your cordless tools. When your motor experiences stalling, intermittent function, or excessive sparking, this genuine pair of carbon brushes re-establishes optimal electrical current to the armature. Replacing both brushes at the same time protects the commutator and armature from premature wear on 14.4V and 18V tools such as the DDF458, DHP482, or DTD146. Featuring attached lead wires and springs, this complete set makes maintenance quick and straightforward.