Thank you for viewing. I made a mistake and ordered too many, so I'm selling them because I have a lot of stock. It's cheaper than buying from the official store, so please consider it. Sharpener specifically for metal blades, push-to-sharpen type for long-lasting use. Product Name: Roll Sharpener (for metal knives only) *For double-edged blades only Size: 197mm x 58mm x 70mm Weight: 80 grams Materials: (Body) Glass fiber reinforced polyamide, (Cover) Polyamide (Whetstone part) Fine ceramics, polyacetal (Non-slip) Silicone rubber Operating temperature: 80°C (resin part) Country of Origin: Finland Notes: For metal double-edged knives only *Cannot sharpen single-edged knives or knives with serrated blades like bread knives. - Brand: Fine Kitchen Series - Model: RS-20