Goture Boat Rods-Holder Rack Rail Plastic Adjustable Clamp Opening 4.70 inches CLAMPING ON THE PLACE YOU WANT TO CLAMP: Regardless of the place you want to clamp is horizontal, vertical, or cylindrical, which less than 4.70 inches in width will work. according to your requirement to change the clamp opening's pose. Suitable for railing, gunwale, pickup truck, kayaks, lawn chair, etc NOT RESTRICTED BY THE ANGLE AND DIRECTION: The maximum clamp opening is 4.70 inches in width, adjustable 360 degree fishing rod direction and 45 degree elevation-angle ULTRA-FIRM ON POSITION: Fixed with a screw stick, easy to clamp tightly. Other binding site adopt the same way to keep in place, more than that, there are sawteeth in the binding site, prevents sliding. A rotary style locker on the top of the holder, ensure no risk at all ANY STANDARD SIZE CASTING RODS YOU COULD POSSIBLY USE FOR FRESH WATER ARE AVAILABLE: include caster rod, fly rod, spinning rod, etc. READY TO USE: This rod holder is assembled now, use immediately