Hubbell Wiring Device-Kellems shroud kits convert existing Insulgrip, Twist-Lock devices to Safety-Shroud, Twist-Lock plugs. These shrouds shield the plug blades from deformation, engage with the mechanical interlock enclosure to prevent make & break under load and virtually eliminate the user contact with energized partially connected plugs. They feature nylon shroud with zinc-plated steel screws for corrosion resistance and durability. Choose from a wide range of these Add-A-Shroud devices for converting 2, 3 and 4 pole plugs.