The Makita Bristle Brush Couple Shaft Attachment is the perfect accessory for Makita 18V X2 LXT (36V) and MM4 4-Stroke Engine Couple Shaft Power Heads (sold separately). The Bristle Brush Couple Shaft Attachment features a wide sweeping surface of 23-5/8” and durable nylon bristles for optimum performance. The steel drive shaft reduces vibration and increases equipment life.