They are use in motorsport.. Rodobal
http://www.getecno.com/italiano/motorsport_rodobal.htm
On topmount we use rg16 model
http://www.getecno.com/pdf/tabelle_motorsport_rodobal.pdf
These are the words from my friend who is WTCC engineer: "Don't take Rodobal, they are ****". Only Schaublin, Aurora, Fluro. Schaublin are the best.