Adjustable Book-Hinge Connection 0° to 180° for F34 Conical Truss

The ProX XT-BOOKHINGE Adjustable Book-Hinge Truss Connection from the most trusted staging support systems in the industry, and is built to the highest standards of safety and performance. It's a rugged yet lightweight trussing solution perfect for mobile DJs, bands, outdoor performances, nightclubs, live mobile productions, or permanent installations.    It adjusts from 0° to 180° and fits ProX 12 SQ F34 Conical trussing.   Manufactured from high-grade and lightweight aluminum which is easy for transportation and setup!  This product can provide a universal solution for truss angles.  

The ProX XT-BOOKHINGE is the first trussing hinge from ProX that adjusts from 0° to 180° for unique truss construction projects...
https://www.proxdirect.com/products/view/1486