Excellent sharpening pen: Our diamond sharpening pen is perfect for general sanding, hunting, outdoor adventure, fishing and other outdoor activities. It is perfect for hunters, fisherman, campers, migrant workers and cooks. Portable Design: This pen knife sharpener is designed like a pen for easy storage of the pocket clip of shirt. The rounded end is designed with a slot that can be used to sharpen small items such as needles and hooks. Durable material: the diamond sharpening pen is made of high quality diamond, solid and durable, not easy to break, reliable quality, long service life, comfortable to touch and easy to grip. It is an ideal tool for outdoor sports. Easy to use: The sharpening pen is easy and convenient to use, just unscrew the cap, put the diamond handle into the correct position and tighten the cap. Then one hand holds the sharpener and the other rubs the knife in the diamond part. After sharpening, wipe the tool with a damp cloth or rinse with water and dry it, then clean the sharpener with a soft brush. Value combination: We have total 2 sets of stone pen sharpeners, one of which includes blue pen case + diamond sharpening lever, enough for your daily needs. You can take it with you or use it in the kitchen.