DMT MP1-F 3 Piece Sharpening Kit - Fine W6FP offers easy counter or bench use for a larger, diamond surface for sharpening a variety of knives and edges F70F an ultra portable, keychain sharpener D3F on-the-go pocket-sized convenience Sharpening with diamonds is fast and easy and no oil needed - sharpen dry or with water Durable construction will provide years of consistent performance and reliable service