Catch Supplies 508X 5 Pack Premium High Yield Replacement Toner Cartridge Compatible with HP Colour LaserJet Enterprise M553dn M553x M552 MFP M577 Printers |Black, Cyan, Magenta, Yellow Dustproof plastic bag Shockproof Air bag Brand box Corrugated box There may be a plastic brace, plastic cover, or paper drum protector depending on the cartridge you ordered. This will make sure the toner is evenly distributed within the cartridge. If pulled at an angle, it may cause malfunctions Some cartridge types will not have a sealing strip to pull