Running your knives along the steel either before or after every use helps maintain sharpness by realigning the edge and correcting the causes of dullness, such as a rolled edge.Product dimensions:13" Length x 1" Width x 1" HeightProduct weight:0.5 lbCoarseness: MediumHandle Material: PlasticSharpener Material: Stainless SteelUsage Tips:-Additional info:-KF-S110-VC-40687 #04176