Hi Dan,

The Tower plugs look like and OS clone. It is very possible that OS makes them for tower. They even are that same mickey mouse "short reach" that is sold as a long reach plug.

My guess is that they are a poor man's OS # 8 plug. That would be good news!

This is a great question. Let's see if we can get Hobby Services involved and get an answer as to what they really are and what the heat range is

Ernie