2 high quality ceramic wheels: one gritty for sharpening damaged blades and one with finer grit for regular maintenance Ergonomic: easy to handle handle and non-slip feet for increased stability when sharpening Unique pivoting design: thanks to its unique design and its folding handle, storage becomes easy Compatible with most knives with stainless steel blades Wash with a damp cloth, not suitable for sharpening with serrated knives or ceramic blades Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!