This is the same Tab as ST3, cut to fit 1.75" tube (easily modified for 1.5 or 2.0), and joined by a bridge to make a bracket, the bridge between tabs also makes the combination more than twice as strong as when used individually. And it saves 15 minutes over single tabs every time. Made for use on Shock hoops, tube buggy chassis,ect... If you are a shop, you need every time saver you can get to decrease work backlog and keep making money, and so much better when it is stronger too. These make tab placement accurate, easy, and fast, period. .25" (1/4) HRP&O Steel, sold in pairs.