Roll N Lock Cargo Manager for 04-07 Silverado/Sierra 1500 Crew Cab 5.8 Ft. Bed Model CM270Roll N Lock Cargo Manager Rolling Truck Bed Divider, Works Only with Roll N Lock Covers, for 2004 2007 Silverado Sierra 1500 Crew Cab (Inlcuding Denali) 5. 8 Ft. Bed Model CM270 Cargo Manager(R), an optional companion product for Roll N Lock, is a movable bed divider that can be positioned every 3 inch along the length of the truck bed to manage and contain lightweight cargo. Controlled from the driver's side, Cargo Manager is repositioned by simply