SMALLRIG 15mm Carbon Fiber Rod 30cm 12 inch, Pack of 2-851 It is the new version of carbon fiber rod with the more smooth surface. It fits 15mm rod clamp but its surface is not shiny anymore because we have redesigned it based on some customers' advice. The carbon fiber rods are much lighter than stainless steel rods, but carbon fiber rods are incredibly rigid and durable. Standard 15mm, can be used with 15mm rod clamp, follow focus, matte box, and so on. Weight: only 37g; Package includes: 2 x carbon fiber rod. Please note that the carbon fiber rods do not feature female thread