These are high-end highly efficient chains with 12mm links. They come in a very strong zipped storage bag with an instruction booklet. The set including the bag weigh 5Kg - hence the postage. 

They will fit the following tyres:

175/80 R15    185/75 R15    185/80 R15    195/60 R16    195/65 R16    195/70 R15    195/75 R14

205/55 R16    205/60 R16    205/65 R15    205/70 R14

215/50 R16    215/60 R15    215/65 R14    225/55 R15    225/60 R14    235/40 R17    245/50 R14

These are new and unused - changed the car so these would be no good to me now.

Thanks for looking.