3/4" diameter x 9" long super strong T-Bar. This 9" T-Bar features an offset tool post location. When assembled to the optional Tool Post you have a 6" offset on one side and a 3" offset on the other. Rotate this bar in your banjo and the offset swaps ends. This is like using 2 T-Bars, a 12" and a 6" without the need for swaping posts. You will be amazed at how easily your tool qlides along this bar. Select the post appropriate for your lathe, screw the post onto the bar, tighten and your ready for the best turning you've ever done.