This is the most rugged manual shredder we’ve ever offered. The rollers cut a 0.8mm shred, are made from hardened steel and are nearly 5″ wide. Through much experimentation and testing, we’ve finally found a lubricant for the shredders that is completely food grade, non-oil based, and flavorless (although some might find it slightly sweet). This lubricant come with the shredder at no additional charge. This lubricant will improve the functionality of the shredders 100%. Larger quantities of lubricant is available on the accessories page. See details on proper usage of the lubricant on the accessories page.