Dahle 710 1x4.7mm P-7 Heavy Duty Cross Cut Shredder, in order to protect our National Security, military and government agencies require higher levels of security from their paper shredders. The Dahle 710 is an NSA/CSS 02-01 approved, Security Level P-7 shredder. It's capable of reducing a sheet of paper into over 15,500 tiny particles.