The RAM-B-218-1U consists of a 1" ball and 0.25" NPT female thread. This part connects to any 0.25" NPT male thread, including RAM-PF-585-X flex arm series mounts and RAM-PA54XX rigid arm series mounts.
Thread Pitch: 1/2" NPT
Ball/socket size: B-size (1")
- Standard use: 2 lbs
- Heavy-duty use: 1 lb
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