With structurally strong and durable tension locks, we connect octagon uprights and beams to be cubic shell scheme booths.  Z917 simple lock is for light showcase series aluminum profile K796, K797,K798,K800.  Made of high carbon steel, which is high-quality material. Strong compressive ability, strong enough thickness and hardness, and is not easy to deform, the loading capacity is within 2.5mm after 25KN loading. Only a wrench can be used to complete the construction of a booth, Z917 tension lock is compatible with 4.3mm groove upright extrusion.  LT-Z917