4.72 Large Clamp On Fishing Rod Holder for Boats & Kayaks | Bass Pontoon Boat Jon Boat Dock Use No Drill Install Universal Fit Round Square Rails Saltwater Safe

4.72 Ultra-Large Clamp : The ultimate fishing rod holder features an incredible 0.20 to 4.72 clamp opening that fits perfectly on various boat rails flat gunwales round tubes and square tubes helping you easily build a much more flexible gear setup for any watercraft