No, Radio Shack doesn't sell those telescoping masts any longer. The ones at Lowes are basically the same thing though. They are made out of pretty thick-walled alluminum. The good thing is they come with guy rings every 10 feet and you will need to guy the mast if you experience any winds at all. I've used fence post rails before and they work too but they are significantly heavier than the telescoping masts. They will need to be guyed really well to withstand bending from strong winds.