Pholus centre caps.
That's the type I thought. I'll have a look tomorrow (Tuesday) to see how many spare ones I have. There's definitely one that's in the driver's seat-back pocket; there might be one or two more hiding away in the car.
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loki_the_glt - Skipper of the Exxon Valdez, driver of Sweden's finest sporting saloon - and pining for another Slant-4.
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