Fits rod butts up to 1.5 in. in. diameter. Dimension - Large; Length - 19 in. inches. Heavy duty. Great for larger catfish rods, but can be used for smaller rods also. Holds your rod so your hands are free to eat lunch, take a drink, help the kids, etc.. Great to have when fishing with two poles. Many use for shore fishing for catfish, salmon, any fish. Can be used on docks between the grooves or gaps. For additional safe keeping, tie a rope to your rod & to railing or dock