Makita is giving landscapers more options with both MM4 4-Stroke Engine and 36V (18V X2) LXT couple-shaft power heads (sold separately), and the Shaft Extension Couple Shaft Attachment is the right accessory for use with this versatile system. The 42 extended reach allows access to hard-to-reach branches and shrubs, and quickly attaches to power head for easy operation. In addition, the steel drive shaft is engineered for lower vibration and longer service life.