These fence toppers are an inexpensive way to outline the perimeter of your ballpark. Fence toppers reduce the possibility of player injuries by adding protection and clear visibility. Constructed of bright yellow 4″ diameter rigid corrugated plastic tubing. Pre-split for use with install tool for easier installation. Weather treated and UV protected to last the test of time. Adds a professional quality appearance on every game day. Optional installation tool and UV resistant cable ties available.