Quik Lok SP/180 Pair of aluminum stands with a 35 mm diameter main tube and pneumatic air cushion speaker lowering mechanism. Aluminum speaker stands with an air cushion mechanism that ensures a slow and gentle lowering of the speakers without jolts. Robust, lightweight construction for easy transport and stability of the tripod legs. Height adjustment with reinforced nylon sleeve, friction system made of non-slip material, and steel safety pin with chain. The locking mechanism on the height adjustment ring prevents the safety pin from scratching the tube paint during transport. The stand comes with an adapter for mounting boxes with a 38 mm hole. Quik Lok SP/180 BK air cushion speaker stand features. Quik Lok SP/180 BK air cushion speaker stand specifications.