Standard 4040 X5:4040 X5 is Standard's fastest high security shredder that shreds at a speed of 57 feet per minute.Standard's Level 5 Security Shredders exceed NSA/CSS Specifications 02-01 for Top Secret, COMSEC,INFOSEC, CRYPTOLOGIC, and SCI. They are a perfect fit for any agency that wishes to maintain high reliability along with high-security shredding. All Standard X5 High-Security Shredders shred to a particle size of1mm x 4mm.