Bosch 18V BL Drywall Brushless Rotary Cut Out Tool Bare Unit GCU18V-30. 1 x 18V Brushless Drywall Rotary Tool. 1 x 3.17 mm (1/8) Guide-Point Drywall Spiral Bit. It has a powerful brushless motor and the soft start allows the motor to build up speed and so not overload the engine.
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