Small air filter for carb vent tubes

[goingnowhereslowly]

Hi dogs,

I'm looking for small air filters (that can be lubed) to be used on the carb vent hoses, any ideas where I can find them?

Something along these lines:

 

[Alphat]

 

[2StrokeDan]

 

[Kortbroek]

 

[goingnowhereslowly]

 

[Bill the Bong]

 

[Skeltonsc]