Access Ladder Racks 4001656 Freely reposition along rails to easily secure cargo in truck box. 50 lb. maximum capacity per tie down. Set of four. Only for ADARAC(TM) Rails with mounting channels. Tie down strap not included. ADARAC Anchor Cleat Kit (for mounting channel models) (set of 2) Access ADARAC Accessories Anchor Cleat Kit (for Mounting Channel Models) (Set of 2)