The RAM® Universal Adapt-A-Post™ Base is the revolutionary answer to combine compatibilty across post and spline systems from RAM® Mounts, Scotty, Fish-On, Railblaza, Cannon, Brocraft, Cabela's and Bass Pro Shops. This version of the RAM® Universal Adapt-A-Post™ is a drill-down base designed with 4 pre-drilled holes. Each RAM® Universal Adapt-A-Post™ base features a quick-release button to safely disengage the rod holder as well as keep it secure while fishing out on the water.