For genuine Toyota replacements.
These 'screw on' type wiper blades suit a standard GT:
Part number : 85212-YZZCJ
Price : £7.03 inc vat (2008)
Part number : 85212-YZZCH
Price : £7.03 inc vat (2008)
Each one includes a new set of screws and rubber mounting. There's a funky little wear indicator on them too.
Just make sure your current arms are the screw-on type fitment.
Mine have got screws but there is like a clip release on them too.You can get wee adaptors for the screw on type to make them clip ons, I've a set somewhere in the shed only a few quid too