ALEKO Gate Part #9 Wall Mount Butterfly Gate Latch Self Latch for 1-3/8-1-5/8 Chain Link Gate Frames Butterfly latches allow the gate to swing in both directions. To open latch, simply lift wing and open gate. This wall mount chain link gate latch is galvanized for durability and also really easy to install. Material: Steel. Finish: Galvanized. This butterfly latch fits chain link pipe gate frames 1-3/8 inch thru 1-5/8 inch in diameter