Judging from the pics it looks like they are not adjustable. Only one setting.
I would go for adjustable sways, as Andrew said you can then change them to suit your driving style.

I found having adjustables on the GC very handy.
When I upgraded the sways they were both set to hard, made it very twitchy.
Changed the rear setting, made the car for more manageable.

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[COLOR=RoyalBlue][B][I]Titanium Reinforced[/I][/B]
MY00 Impreza WRX | MY11 Liberty GT Premium[/COLOR]