ITEM NAME:0.46" NPT Pipe Alloy Weld On Filler Neck Thread Nut for Fuel Oil Water Tank Product Description Feature: 100% brand new and high quality. These bungs have a wide inlet with a deep taper to enhance flow right out of the tank. They have a locating step of 0.875". Their height is about 0.46 inches (11.6mm). It is made from lightweight aluminum alloy. Fitment for: Use With Fuel, Oil, Gas and Water Tank Package Included: 1* Thread Nut Notes: Conversion1 inch = 25.4mm or 1mm = 0.0393 inch 1. Due to the difference between different monitors, the pictures may not reflect the actual color of the item. 2. Compare the detail sizes with yours, please allow 1-2mm error, due to manual measurement. 3. Please leave a message before you give the bad feedback, if the products have some problems. Thanks for your understanding and have a nice day! If you have any uncertainty or feel confused about the item, please feel free to.These bungs have a wide inlet with a deep taper to enhance flow right out of the tank. 1 Thread Nut. Use With Fuel, Oil, Gas and Water Tank. It is made from lightweight aluminum alloy. They have a locating step of 0.875".