Cant tell and the seller doesnt explain what size they are 
Can anyone tell by looking at them?
http://cgi.ebay.co.uk/SEAT-LEON-CUPRA-VW-FRONT-BRAKE-DISCS-CALLIPERS-BREMBO_W0QQitemZ320304731041QQcmdZViewItem?hash=item320304731041&_trkparms=72%3A1301%7C39%3A1%7C66%3A2%7C65%3A12%7C240%3A1318&_trksid=p3286.c0.m14
Wooah - they certainly are
NOT Brembo calipers.

They are OEM-spec Teves ATE FNRG calipers, and yes, they are from the current Leon Cupra.
The correct size for the discs should be 345mm in diameter, and 30mm thick.
If you fit them to a GTI or Ed30, then you will also need the larger rear splash shields (1K0 615 311 C and 1K0 615 312 C - about a fiver for each), and the different flexible brake hoses (1K0 611 701 M - qty2). And a litre of fresh Volkswagen-only brake fluid (B 000 750 M3)!
