Because they do not require tools or locknut, Speedlock™ accelerates connection of armored cable, metal clad cable, or flexible metallic conduit to steel boxes and enclosures. Available configurations include Straight, Straight for Old Work, Duplex for installing 2 cables in one KO, and 90 Degree. Zinc connectors are reusable, and red insulated throats create smooth pulling surface to protect wire insulation from damage. For installation, connector snaps onto cable and then into knock-out.