From Little Giant, USA. These are quality funnels, made frompolyethylene resin that is resistant to almost any chemical or lubricant. The funnel has a finemesh brass screen built in. The thing about thisfunnel is it has a bigger bowl capacity, so it is less likely toover-flow than regular funnels. And the outlet is wide and fast flowing.A hook-hole flange is incorporated for hanging funnel up. Dimension isfunnel opening diameter.