WirthCo 32167 Funnel King Heavy Duty Filler Extension Fits the following Funnel King funnels and measurers: #90150, #95070, #94026 and #94046 Spout has an outer diameter of 5/32 inches and a  inch opening Fits 63.5 millimeter threading Overall length of the extension is 14-1/4 inches For over 30 years, WirthCo has been a prime manufacturer of practical products for making life easier and safer