This brush set is specifically engineered for high-amperage tools, fitting the GA9060RX3, GA9060, and GA7060 series. These tools feature a 15 AMP motor and utilize an automatic carbon brush cut-off mechanism. This safety feature automatically stops the tool when the brushes wear down to a critical level, preventing damage to the motor commutator. Replacing the brushes restores functionality to tools that have shut down due to this protection mode or exhibit sparking and power loss.