These two brackets bolt into the t-slots of your Front Runner roof rack. Used to mount a Hi-Lift Jacks to the top of your rack. Fits all size Hi-Lift Jacks. The Handle Bracket opens to allow access to your Hi-Lift Jack. Made from steel and finished with the same durable, weather resistant black powder coating as the Front Runner Racks. The Handle Bracket is lockable with the RRAC134.