Seachoice - StarPort Accessory Rail Base, Fits 3/4" to 1" Round Rails, Black

Attaches to round (89920) or round and square (89921) rails to provide a quick and easy attachment point for any StarPort accessory.
 
Simple to install with a screwdriver – no need to drill holes
Easily move the Rail Base to a different location on the rail
Includes adapters, rubber grips, self-adhesive grip tape and stainless-steel fasteners
Installs in minutes