EDT_EHC_Extender_Hook_Clamps_Design_Package_Portable_Exhibit_booth Posted on October 15, 2015October 16, 2015 by Rob Boutcher EDT_EHC_Extender_Hook_Clamps_Design_Package_Portable_Exhibit_booth Extender hook clamps. Made to fit 1″ and 2″ tube and chords