Designed to secure the seats of the vehiclenAllows for great flexibilitynMade from high strength, 7075-T6 aircraft quality anodized aluminum alloynThe larger footprint makes your trailer more universalnPre-drilled and counter sunk every 4 inches for easy installationnSteadymate Series L Track Surface Mount is designed to secure the seats of the vehicle. This surface mount is made from high strength, 7075-T6 aircraft quality anodized aluminum alloy for enhanced durability. It is pre-drilled and counter sunk every 4 inches for easy installation. This surface mount is more flexible and features larger footprint to make the trailer more universal.