Need a little extra insulation between your rack and gear?The Front Runner T-Slot Rubber Beading slides easily into your Front Runner rack t-slots for extra grip and cushioning. It reduces rattles and is great for storage boxes, firewood, or any other item that you want to insulate from your rack. Comes in 1.5m (5') lengths.On some vehicles with sun roofs, installing the t-slot beading on the front slats may help lessen wind noise.