1.Product Dimensions: this kayak track system three precise sizes: approximately 6nches,9 inches, 12inches; Please select an appropriate flat surface on your kayak based on its size to ensure fit 2.Material Details: the kayak track mounts are crafted from nylon material with exquisite workmanship, a sturdy structure, and a flawless smooth surface; They effectively resist breaking and fading, combining outstanding durability with lightweight properties, providing assurance for your boating experience 3.: each set of kayak fishing accessories comes with 8 stainless steel screws, making the installation process quick and straightforward; Simply choose a suitable installation location, ensure easy access to the bottom, and securely fasten the base to the kayak using the screws for effortless installation 4.Wide Applicability: these installation kayak fishing rod holder exhibit versatility and flexibility; Whether your kayak is already equipped with built-in tracks or not, you can flexibly install tracks in any position according to your actual needs; They occupy minimal space and are easy to store and carry