Not only does it match up with the Railblaza base system and secure one marine accessory, the 150mm Adjustable Extender Arm raises up to 3 for more positioning possibilities. The extenders one pivot allows for full-circle rotation and its snap lock secures it into the position of your choice. It also has a knob that adjusts throughout a 180 tilt in 15 increments. Not recommended for use with the Railblaza RodHolder II. Railblaza base not included. Type: Kayak Accessories.