COPPER CRIMP SLEEVES:

Bullet is designed for easy installation and provide an exceptional
connection.
CLOSED END CONNECTORS:

Made from nylon 6/6 (Polyimide 66).
STEEL CRIMP SLEEVES:

Economical, brass-plated steel provides an excellent low resistance
connection. UL 94V-2 self extinguishing, closed end style.
CERAMICS

Made of high quality ceramics.
Have excellent electrical and heat resistant properties.
Maximum working temperature of 1,000 °F.
For applications above 200 °F.
Uses include appliances, high powered lighting fixtures, ceiling fans,
heaters, plastic extrusion/injection molding barrels and similar high
temperature applications.