Arlington 38AST-50 SNAP-2-IT Conduit Cable Connectors, Insulated Throat, 50-pack is made of Zinc die-cast metal. There are no tools needed to use the Conduit cable connectors, simply snap the cable into the fitting and snap it into the box. Removing cable from the conduit connectors is also easy, just loosen the screw at the top. The fitting is secured by the angled, two prong clip, eliminating the chance of cable pullout. The conduit cable connector will accept cable ranges from .405 to .612. Use this conduit cable connector for MC/HCF steel and aluminum cable or AC/HCF steel and aluminum cable.