ElectricianSupplies.com is your source for Rigid Conduit & Emt Fittings items including Combination Couplings ! Try emailing or calling us at 800-448-2014 - we'll do our best to answer your questions. We do stock Combination Couplings and they usually ship within #time#. We work very hard to honor our shipping and delivery estimates! We appreciate the opportunity to serve you! Join our 80,000 satisfied commercial and residential customers.