Function: Cable extension or joining two male BNC plugs together.

Configuration: Female-to-Female (or Jack-to-Jack).

Design: Typically a straight adapter (barrel connector), though T-shaped or right-angle adapters also exist for different needs.

Housing: Usually made of nickel-plated brass or other durable metal for shielding and longevity.

Signal Integrity: Designed for minimal signal loss or impedance mismatch when connecting high-frequency RF and video signals.

Ease of Use: Provides a secure, quick-connect solution without the need for soldering or complex tooling.

Impedance Compatibility: Available in both $50 \text{ Ohm}$ and $75 \text{ Ohm}$ versions (matching the connected cables).