This is a combination of the WoodWindDesign carbon fiber Bb/A clarinet stand and the carbon fiber large bass clarinet stand. You save the hyper-expensive shipping on the Bb/A clarinet stand when you order both together. Here is what is included:
Carbon Fiber Bass Clarinet Stand – Large: https://www.bassclarinet.net/product/carbon-fiber-bass-clarinet-stand-low-c/
Carbon Fiber Bb/A Clarinet Stand: https://www.bassclarinet.net/product/carbonfiber-clarinet-stand/
See each product link for more details.