Size 3/8" Squeeze Connector, BX Squeeze Connector BS standard.

Flexible Metal Conduit Fittings are used to bond metal clad cables & conduits to electrical junction boxes & enclosures. Combination fittings allow the installer to easily join flexible metal conduits to EMT, Rigid or Liquid Tight Conduits. These Fittings are offered in both 90 degree or straight profiles and can be bonded using built in set screws, squeeze clamps, screw threads, or saddle mount devices. These connectors accommodate flexible metal conduits from 1/2" to 4".

Squeeze Connectors - Straight
Application:
These squeeze-type connectors with insulated throats are used in dry locations to bond flexible metal conduits to boxes or enclosures.