I get many questions about this model. To answer most of them, you can compose
this model using Service Packages (though it is a bit of overkill):
6 of 5116 (small cylinder); 3 of 5289 (for the parts making up the
spherical joints); 3 of 5165 (the hinges making the triangular frames);
3 of 5228 (small LEGO TECHNIC(r) bricks). These are available from your local
Shop-At-Home services, or in good Lego stores.