Those are the old style rims. They then switched to Prism rims for the rubberz. And then V2 of the Prism rim. The V2 has an extra cross bar on the top to make it stiffer. Here, I took a picture for you. The V2 prism is on the left, old prism on the right, T3 EU that will spank you this Saturday in the back.
The Jaco and SMC sites haven't been updated in like a year.