I have often seen here and other places that the black threads seen on Jr. Gent 1 kits are plastic. This is not the case on our Caballero's the black threads are metal plated with black chrome the only plastic on our kits is the insert in the cap with the female threads. That is plastic for the same reason it is plastic on much more expensive kits. Plastic on metal holds better and metal on metal results in premature thread wear.