WirthCo Funnel King E-Z Flow Pour Spout is designed to screw onto quart and gallon size containers. The cap eliminates unwanted dripping. This pour spout is chemical resistant and fits standard gallon 38 millimeter thread and 28 millimeter quart thread. The overall length is 14-3/4 inches and the spout has a 1 inch outer diameter. For over 30 years, WirthCo has been a prime manufacturer of practical products for making life easier and safer. California Prop 65 - Warning, This product contains chemicals known to the State of California to cause cancer, birth defects or other reproductive harm.