There is a piece of tuning here that is about 39" long. The inside diameter of the tubing is .25" around, or a little over 6mm. The outside diameter is .325. There are 2 tube benders here. One is for 90° bends, and the other is for 45° bends. The width of the bends are .625 across. The 90° bend is 3.75" long, and the 45° bend is 3.5" long. The span of the center of the mounting holes is about 1.5" across.

Thanks for looking!

B4