The idea of a stronger, rugged, and modular tank base was born out of necessity. Originally known as Sentinel, we went through a process of defining who we were and what our products were about and Sentinel came to be known as DuraBull. Countless hours in R&D have been invested in making the very best tank base on the market. We think you will agree it is stronger, lighter, more reliable, and very attractively priced, and makes setting up a site easy. DuraBull tank bases are a top-of-the-line product you can be proud to own.