Condition: New Fuel Type: Napa 4003 Brand: For Wix24003 Manufacturer Part Number: N4003 Set of 10. 1.770" in diameter,cup is 0.850" long Aluminum high wall cup with 112 degree formed cone. These are superior to any aluminum style cup. Please note, these are for the custom black anodized aluminum tubes sold under the product description "Billet Aluminum Low Profile NAPA 4003 Filter" on Ebay with an inside diameter of 1.770" They are usually made in China and these 10 cups are a perfect fit for those tubes that are 9.92" overall length. For the standard NAPA 4003 filter or Wix 24003, you will need the 1.800" cups. Maybe there is a slight error in the size of the product, but it does not affect the use,range of error +/-0.005" Please measure carefully before ordering. Stack of 10 cups will measure in around 8.3".