Genuine LiftMaster MA040 arm end caps for the Mega Arm barrier gate operators, 2 inch, supplied as a pair.
Fitment: LiftMaster MADCBB, MATDCBB, MASDCBB and MASTDCBB fitted with a 2 inch barrier arm. The 3 inch arm takes MA040-3 — measure the arm before ordering.
Replace when the caps are cracked, faded or missing. They keep water out of the arm tube.
