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