These plastic funnels are ideal for fuel filling as the flexible outlet tube can bend into a vertical fuel opening. A removable cleanable filter is incorporated. Dimension is funnel outer diameter. Removable  spout tube is 17cm long o.a. (both funnels)

From Little Giant, USA. These are quality funnels, made from polyethylene resin that is resistant to almost any chemical or lubricant. All have a fine-mesh brass screen built in. The thing about these funnels is they have bigger bowl capacities, so are 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.