Single Junction Box Includes 4 Sided Connecting Hardware for F34 F33 F32 F31 Truss

The ProX XT-SJB-4W Single Tube Multi Junction Box Cube M12 by ProX Direct lets you connect square trussing to I-Beam Trussing or single tubes.  This high grade aluminum junction box securely holds multiple sides with aluminum conical connectors and truss clips. Expand and connect multiple types of trussing with one easy attachment accessory.    Allows connection of F34 square truss to F32 ibeam truss or F31 single tubes.

ProX XT-SJB-4W Single Junction Box Includes 4-Sided Connecting Hardware for F34 F33 F32 F31 Truss...
https://www.proxdirect.com/products/view/2123