The four styles of paper shredders that are produced are. High-Capacity Shredders- are the tool you need if you want to destroy large quantities of paper in a short time. High- Efficiency Shredders- are ideal for the size reduction of paper, cardboard plastic, foil, film, fiberglass, and more. High-Security Shredders- Meet the U.S. Department of Defense's requirements for destruction of classified Through Top Secret COMSEC documents. These shredders offer higher levels of security for the military and government agencies. Small Office and Department Shredders- Perfect for small office or department environments.