Makita® Carbon Brush Set is designed for 9015A, GA6020 6" angle grinders, GA5020 10.5 A 5" SJS angle grinder and GA5020Y super joint angle grinder. Carbon brush set contains brushes with wire lead, spring attached and helps to fix an intermittent motor. It is used for reducing electric braking and motor power. It includes worn brushes that can be worn down near the wire lead and may be cracked, pitted or burned.