A Pack of 20 of these used 12 Gauge Shell / Cartridge- For wheel Nut Covers. 
Ideal for wheel nut size 17mm which are an immediate snug fit. 
Or will also fit 19mm if the tube is heated up slightly first to make it more pliable. 
This pack of 20 will be enough to cover a car with 4 wheels each having 5 standard studs 
WE SUGGEST THAT THESE ITEMS ARE POLISHED WITH A GOOD QUALITY METAL POLISH THEN SPRAYED WITH A CLEAR LACQUER TO PREVENT RUSTING.