T-Knobs are what we use on all of our Triple Bay Box and Triple Bay Flat rod holders to hold and tighten the rod holder bay onto the base, and we also use them to secure the base of the Triple Bay Box to the railing of a pontoon boat.  They are so much easier to tighten than using the wing nuts that were on our first line of rod holders.

We sell our Single Bay rod holders without hardware because there are so many different applications for them that there is not any one hardware kit that would apply to them all.  So that is why we are offering the hardware kit separately so those who want to use them with the Single Bay rod holder may do so.

Included is one T-Knob, one 2 1/4" X 1/4" Phillips machine screw, and one fender washer or PVC washer (please note which washer you prefer when ordering).  This kit will work for adding a Single Bay rod holder onto the pontoon railing where a Triple Bay Box rod holder will not fit.  Usually longer screws are required for dock/pier application, unless attaching to a C-clamp for public docks/piers.