This adapter connects a 1/4" NPT socket to a SUP or Kayak pump's thread to allow attaching the existing pipe with the Halkey Roberts connector or other connector. The ¼" NPT is a common connector for air compressors and by connecting the existing tube directly to a high flow air gun trigger, gauge and compressor, it becomes very fast to fill up Kayaks and SUPs (2mins or less). I could not find this exact adapter anywhere else.
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The author remixed this model.
Used ¼" NPT thread for the model.