Reinforced Locking System: We continuously draw on customer suggestions, improve the locking system, add elastic fasteners at each joint to avoid black flag pole collapse, at the same time ensure easy unlocking Extra Long Service Life: Wevalor 30 ft flag poles are upgraded with 1.5mm aluminum walls, strong enough to withstand high winds and harsh weather, durable enough, and last longer Adjustable Height: Height Adjust from 5.3' to 30'. You can raise & lower the yards flagpoles as