Sharpens regular and serrated blades, fish hooks, gut hooks, and many other tools. The fine (600 grit) tapered rod folds into the ergonomic nylon impregnated plastic handle for protection and ease of carrying. The Lansky tapered diamond rod is ideal for every workshop. Renown for their hardness, diamonds are an excellent abrasive for the fast reconditioning and maintenance of all your various tools and knives.