DMT Diafold Diamond Whetstone Extra Fine and Extra Extra Fine Fweee: * Folding plastic handles protect sharpener when not in use * Sharpens in a fraction of the time required by conventional stones * Extra course diamond provides easy removal of material on a damaged edge and course diamond quickly restores a neglected edge * Portable and lightweight * 2 sides make it more economical and space efficient * Sharpen dry or with water; no messy oils needed * Durable construction will provide years of consistent performance * Made in the USA