Loran "C" adapter, 3-1/8 inch long, with 1 inch x 14 male thread top and 1 inch x 14 female thread bottom, with side hole for coax cable. 

Morad Adapters:

• Made entirely in the USA.
• Precision machined and finished by hand with modern tooling.
• Dependable and rugged.
• Our products are trusted on military, law enforcement, commercial and leisure vessels around the world.