These are SmallRig stainless steel 15mm diameter rods, which are now discontinued. I had them in stock for rebuilding camera rigs, but I'm selling them because I haven't had a chance to use them. Compared to cheaper rods, these are more precise and I think they'll be effective when attaching heavy equipment. They are unused, having only been opened to check their condition upon purchase, and have never been assembled as part of a camera rig. This time, I'm selling a set of two 40cm rods and two 20cm rods. (Not sold separately) Contents: - SmallRig 15mm Stainless Steel Rod - 40cm 16" (2 pieces) 3684 - SmallRig 15mm Stainless Steel Rod - 20cm 16" (2 pieces) 3683 Please feel free to comment if you have any questions. Thank you.