Cross docking/pallet control cones are used in shipping & receiving areas for process control, pallet identification,eliminating loading errors, inspection & testing coordination, control of non-conforming products, inspection/quarantine labeling & DO NOT STACK Pallets warning. DC Managers can design your own color coded system. Available in 13 colors with or without magnets - they can be numbered, lettered or have a dry erase decal so you can write your own message. Used by trucking,manufacturing,distributing and logistics companies. Simple color coding denotes do not move, damaged material, Ready to load, Hazmat or Perishable. Pallet Control Cones simple, cheap and effective.