[] This knife sharpener pen made of the diamond, which is durable enough for sharping blade. The fine grit makes it easy to work. The aluminum housing protects the sharpening rod and prevent your finger from harm. [Retractable & Detachable] This 3 in 1 sharpening rod is easy to carry, you can put it in your bag or tackle box. [ Design] 3-in-1 knife sharpener is a pen shape device that can be used for sharpening any types of dull knives. Sharpening rod have a specially groove for fishing hooks, the conical part of the grinding rod design for serrations and gut hooks. [Save Your Time] This dull knife cutter is a great addition to your kitchen, great diamond sharpening rod to keep your knife sharp. Help to save time and energy by quick sharpen. Geat for half-round and flat surface of the sharpening steel for standard knives edges. [Widely Applications] diamond sharpening pen is catered for all purposes; You can use it to sharpen outdoor tools such as fishing hooks and hunting knives. Indoor tools such as kitchen knives, Chef knives, and scissors. Colour:Blue+silver Material:Diamond Size:13cm Package Contents: 1 x Diamond Knife Sharpener