For Armored Cable, Flexible Metal Conduit and Metal Clad Cable.
These connectors are used to terminate armored cable, flexible metal conduit or metal clad cable to knockouts or unthreaded slip holes in dry location boxes or enclosures. They are available in a variety of styles.
Appleton's NEER Zinc Cable and Conduit Connectors Catalog Page
O-Z/Gedney's NEER Zinc Cable and Conduit Connectors Catalog Page