not strong enough
I purchased 4 of these poles to hold a 16 foot shade sail. The poles are rather cheap and not strong enough to hold a sail taunt like it should be. Even when using the tie down ropes it would not hold the weight. I suspect it wouldn't even hold a smaller sail either. I wouldn't recommend it unless you were using just one pole and affixing the rest of the sail to permanent structures (house, tree etc.) I returned the poles to Northlineexpress which cost me half of the purchase price of the poles because of return shipping and a restock fee. It cost me $80 to find out they don't work and nothing to show for it, what a joke. I wont order anything else from Northlineexpress.