As a 2008/9 FTC team, order Tetrix parts from LEGO Education
(Pitsco) with a 20% discount at this link:
Pitsco, the company that is in partnership with LEGO as LEGO Education, has
listed the structural components of the Tetrix robot design system both on their
website and in a newly-released catalog (Pitsco Ideas & Solutions - 2008
STEM Catalog). Pitsco is also the integrator chosen by FIRST to put
together the kits for FTC this season. We have scanned the Tetrix pages,
and posted them here.