The Adapt-A-Post™ Side Track Base consists of a t-bolt, ratchet tooth and groove composition and female post spline hole. With a turn of the knob you can quickly fasten, adjust or remove the base to your existing track system. The ratchet tooth and groove composition enables you to slide and relocate the mount along the track; it can also rotate 360 degrees around, parallel to the track. The female post spline hole is compatible with many RAM Rod/Tube holders, along with 3rd party holders. Pressing of the side button, located on the right side of the image, you can quickly engage or release your holder from the base.

Features:
1. Quick installation, removal and stowage
2. Easily relocate side track base along track
3. Installation at any point on the track
4. Track bases can rotate 360 degrees while mounted to track
5. Compatible Post/Spline rod holders and extensions
6. High strength materials ensure product longevity
7. Lifetime warranty
8. Made in U.S.A. 

Material:
High Strength Composite

Note:
The "U" in the part number reflects product packaged in poly bag.