dga504zj grinder dhr243rtj 18v light hammer combo kit with 2 5 0ah batteries and dlx2125tj1 makita casesCombo kit with DGA504ZJ Mini Grinder and DHR243RTJ Light Hammer, both tools with BL brushless motor for better performance. DGA504Z FEATURES Equipped with automatic speed control. Change the cutting speed depending on the work you do: Light duty: high rpm mode. Demanding jobs: high torque mode. The energy produced by the BL brushless motor is more efficient, we reduce friction, motor heating and increase battery life. Anti restart system that prevents