The hanging ring is partially dipped in plastic to prevent fricon and effectively protect the contact surface.
Without catch, convenient to operate.
Statement: The "Locking Force" in the chart is the best locking force determined by the test (meaning that adults can easily open and close with bare hands); the hole distance between the hook and the latch body in the picture is the unstressed dimension, which needs to be adjusted hole spacing by yourself to meet different locking force requirements.
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