Description: This sharpening rod can be scaled backwards and then adjusted to a variable length. At the same time, it has a sharp design for fishing hooks and a shirt pocket clip for storage. It is mini, compact and easy to carry, so it can be placed in a pocket, backpack, purse or suitcase. Made of high-quality aluminum alloy and diamond, it is safe,durable and has fast grinding speed. The length of the product is 13cm, the width is 1.4cm, and the height is 1.4mm. It is very suitable for pocket knives, and also suitable for outdoor hiking, hunting, fishing, camping, etc. Item Name: Sharpening Pen Material:Aluminum Alloy,Diamond Size:13cmx1.4cmx1.4cm/5.12inx0.55inx0.55in Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Sharpening Pen