Light Weights for Oly Barbells?

Somewhere on this site there is an article concerning very light weights for barbells to help smooth the transition between 5 or even 10kg jumps.

I think it was in one of CS articles but I simply cannot remember what the article was or how the damn things are called.

Does anyone know what article or weights I am talking about and where I can get them?

http://www.prowriststraps.com/fractional_plates_fraction_plate_weights_lifting

[quote]fat wilhelm wrote:
http://www.prowriststraps.com/fractional_plates_fraction_plate_weights_lifting
[/quote]

Thx!