Custom Kayak Shallow Stick Mounting System. Hole is 1 inch in diameter to allow for shallow stick or power pole to be placed through, and includes two mounting rails for accessories, and one rail for mounting to kayak. You must include your own hardware, but this is a great starting point and it won't cost much at all to get the bolts. If you really need help with this step, you can message me and I can supply links to what you will need. It is incredibly strong and will withstand almost anything you can throw at it. This is a custom made part and can have adjustments made to it if you so please. The dimensions are 6"x9".