If you need to add height from your mounting surface to get the right location for your downriggers or rod holders, Big Jon's 12 inch "Pedestal Mounting Base" is an easy way to mount any Big Jon product that has a 4 in. x 4 in. base.
The Pedestal Mounting Base can be used to solve many mounting problems around your boat. A pair of them are often used to build home-made transom bars.
The Pedestal Mounting Base has been treated with a bright anodized finish to prevent corrosion.
These mounts are exactly what I needed to get my Manual Captain's Pak Sideriggers up to standing operational height on my older 18' Lund Tiller. Exceptional craftsmanship and service/shipping was fast.