There are several suppliers of practically identical metal can filters. I have one on my car.....
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Some are chrome finish, the cheaper ones usually aren't. I can't remember where I bought my replacement but
here's one that might suit. Check that you buy the right fitting diameter. From memory it should be 3/8" dia. but some filters are 5/16" or 1/4" dia. Check when you fit it that it's the right way round; this is usually indicated by a small arrow somewhere on the filter - it's not always very obvious. Arrow should point towards the carb.