Plastic breakable cap prevents entry of foreign materials and protects the female threads on pin lug fire department inlet connections (FDC). Breakable to permit fast fire hose connection. Two eyebolts with nuts for attachment to female pin lug swivel are included.

These caps will fit the most common Fire Department Connection (FDC) which has 2 1/2" NH / NST threads. 2 1/2 inch NH / NST threaded fittings actually measure about 3 inches across. The covers have a 3 1/2 inch diameter, not including the tabs.

Finger tighten only...Do Not Use Pliers!