These are the retro fit tesco branded flat wiper blades.
Made from metal and rubber and comes complete with 5 adapters for universal use.
I always replace mine with bosch ones, but as I'm a bit skint at the moment, thought I'd try these out being only £3 each. It fitted very easily, on testing the performance of the wipe, it's give a clear swipe, and doesn't leave any streaks.
Mixed reviews on the net, but I think it's great value if it last a year or so.
Sizes available; 18", 19", 20", 22", 24"
There were also the old style ones for £1.50 each.