Truss Section Bolt with adjustable height, 10 slots, box type Truss corner size of 8 × 8 × 8 inches, easy to install and remove, equipped with bolts, suitable for bolted square truss, designed for stage equipment, lighting, audio, exhibition billboards, perfectly compatible with various Truss extension combinations, Truss box is made of high-quality forged high-strength alloy, very solid, meeting the high strength requirements of stage/concert, good stability, powerful functions, cost-effective, especially recommended for performance organizers and outdoor event planners