EZ-POUR Multi-Purpose RIGID Replacement Spout Kit is for lawn care, vehicle fluids, water cans, and Non-Fuel containers. Yellow cap is coarse thread and typically fits Midwest, Scepter, Igloo, Eagle, & EZ-POUR adapters for Chilton, Jerry cans, No Spill, Metal cans & Racing jugs. Black cap is fine thread and typically fits older Briggs and Stratton, Rubbermaid, Essence, Blitz and Gott cans. (Grey cap fits older Wedco and later model Briggs and Stratton cans-not included).