JYINCPED Marine Dock Piling Cone Caps, Cone Pylon Cap for Marine Dock Put the piling caps /covers over the top of the wooden marine dock posts Protect costly dock poles from internal rot and damage caused by exposure to the elements and from marine life Protect your pylons from splintering, weathering, damage and giving a finished appearance The cone design discourages birds from landing on the dock posts and making mess High quality PVC piling caps withstand the environment and feature UV resistance, Chalking resistance, Fading resistance Black or White cone dock piling cap / covers ideal for marine dock, boat dock, pier or floating boat dock Dock pole caps comes with 304 stainless steel mounting screws for convenient installation Color available: black or white ; Sizes Available: 8", 8.5", 9", 9.5" How to Measure Pilings and Get the Correct Caps Properly measuring pilings and order the correct size the first time to Finish your project at one time. 1.Some Tips for Measuring Measure the tops of ALL piles. Please don't measure one and assume they all have the same dimensions, Because wooden pilings are all different, not completely round and do not have the exact same measurements. 2.The Most Accurate Way: String and Circumference Measure Method ?Using a string and wrap the string around the pole ? Lay string out and measure the length of the string ? Use the Circumference Conversion Chart provided OR Divide string length by ? or 3.14159 to get the diameter of cone cap you need to purchase OR search for Circumference Calculator, put string length in circumference and it will calculate the diameter For example,Length of string = 26 inch divided by (?) 3.14159 = 8.27606 Diameter = 8.5 Inch piling cap 3.Less Accurate Way ? Measure the piling in both directions North/South and East / West since piling are not round always ?Piling caps are slightly larger to allow for different size pilings For example, a piling measures 8.3in x 8.1in = need a 8.5in piling cap