Based on this product's specifications, here are some alternatives and similar models
Compulocks Stability Base for the Mast Stand Black Compatibility: Compulocks Mast Stand
Summary description:
The Compulocks Stability Base for the Mast Stand is designed to provide stability and support for the Compulocks Mast Stand models 333B and 333W. It comes in a sleek black color and is sold as a single unit. This base enhances the overall stability of your setup, ensuring that your equipment remains secure and steady during use.