thanks for pointing it out. google tells me Delrin is indeed a Dupon patented trademark.
about these spurs, not owning a DEX210 but only DEX410 - can the same spur be used between the 2 cars or will there be 2 different part numbers?
Was looking up amainhobbies and a bit puzzled that a similar RW spur is mentioned to be only for DEX210.
http://www.amainhobbies.com/product_...ear-83T-DEX210