ABS exhaust pipe Reducer adapter 110 to75 / 150 to110 / 200 to150 Ventilation Ducting Connector Variable Diameter Pipe Fittings
https://www.vogueparade.com/shopping/EN/200282142/1/4000527724392/abs-exhaust-pipe-reducer-adapter-110-to75-150-to110-200-to150-ventilation-ducting-connector-variable-diameter-pipe-fittings//