Ceramic insulator. Can be used as an end or centre insulator. This insulator will not arc over, even under full legal power. Molded ridges give extra-long voltage path to prevent high voltage breakdown.

Will not break with long antennas and will not arc over or melt even under full legal power. Molded ridges give extra-long path to prevent high-voltage breakdown. Smooth wire holes prevent wire damage.

Use as center or end insulator for dipoles, doublets, G5RVs, guy wires, vees.