Don't like that one
If I remember correctly?, the blue ones came with a wider nozzle, and the green with a thinner nozzle - they aren't interchangeable as you also need to change the metal pin that cleans the nozzle when you load it.My solder sucker looks like yours, Nigel, but it is blue and is about 48 years old. I replaced its nozzle tip a few times.
When I bought it its cost was nowhere as expensive as it is today.
We had something similar to that for a while, it was REALLY, REALLY good - but then it died, and we couldn't get parts for itThis is https://www.amazon.com/BlackJack-SolderWerks-CSI-Portable-Desoldering/dp/B01B6Q2NW4 a low-end model of what;s probably preferred.