Corner Brackets are 4 corner brackets with knockouts for hoses and additional mounting points for cargo straps.These brackets adjust easily as they slide along the t-slots of the Slimline and Slimline II roof rack and can be tailored to any size needed.These low profile metal Corner Brackets grasp any box, hard-shell suitcase or toolbox securely.To secure cargo the Corner Brackets bolt to the t-slots in the slats of the Slimline and Slimline II roof racks with the supplied eye nuts and can be hand tightened in place, making them convenient as a storage solution that may need to be adjusted frequently, like when used on the Front Runner Jeep JK Wrangler SLII Interior Rack - (Product Code: VACC021) and Front Runner Drawer unit decks.The Front Runner Universal Corner Brackets offer a stronger securing solution to the standard Eye Nut and is a perfect upgrade for off-road use or securing heavier objects. *Stratchits are not included in the purchase of these brackets and are sold separately.