1.5 Ball Mount with Gear Head Post & 241 Side Deck Mount The newest edition to our ball mounting system is our 1 ball mount. The bigger ball design gives you a much greater clamping force for larger accessories while still having a smooth full range of motion. Click and lock any Scotty post mount accessory into the Gear Head. Designed for use with Scotty Baitcaster Spinning & Fly Rod HoldersBase Mount Dimensions: 2 x 4Mount Height Stands: 10 TallWARNING: Cancer and Reproductive Harm -www.P65Warnings.ca.gov