With structurally strong and durable tension locks, we connect octagon uprights and beams to be cubic shell scheme booths.  Z959 tension lock is used for 8.5mm groove beam extrusion with lock chamber 28X15mm, eccenter diagram 13mm. It weights 0.06 kilograms. Composed of zinc shell, reed and eccentric wheel, made of zinc and high carbon steel, which are high-quality material. Strong compressive ability, strong enough thickness and hardness, and is not easy to deform. Only a wrench can be used to complete the construction of a booth, Z959 tension lock is compatible with 8.5mm groove beam extrusion. It is components for standard booth\ shell scheme\display booth \exhibition booth\pavilion group booth\trade show\back to back booth\fascia board\expo and liner booth, used in exhibition industry.