NOS GAST ROA-V210-BN Miniature Rocking Piston Pump Vacuum or Pressure

Item is from a large lot of municipal parts surplus. I have no clue what they were intending on using these for. Please verify through the photos and info given that this is the correct part for your application. Please verify upon install that item fits and operates correctly for your application. All parts are sold as-is. Items appear unused and in good shape. Listing does not include anything that isn't described or shown. This may ship UPS, Fed EX, or USPS, we try and use whatever is quickest and as always, price is a consideration...