Name:4 in 1 Multi-Function Gravity Sensing Pen Material:Metal Weight:21g Color:Black,Silver Size:146x10mm(5.75x0.39in) Writing Point:0.7mm(Ballpoint Pen);0.5mm(Mechanical Pencil) Stype:(Black+Blue+Red)3Colors Ballpoint Pen+Mechanical Pencil Features: 1.100% brand new high-quality products. 2. All metal ballpoint pen, smooth writing, not easy to break ink. 3. Humanized structural design brings you a unique writing experience. 4. The pen refill can be replaced. There are three colors of ballpoint pen refills that can be replaced. Pencil refills are easy to replace. 5. Metal signature pen, simple design style, no flamboyance, only style. 6. Adhere to exquisite and high-quality craftsmanship, with thick metal materials, comfortable, and full and solid texture. 6.Lightweight design, a single pen weighs only about 21g, and the function of four pens is only the weight of one pen. Usage: 1:How to switch the refill color ? The barrel has black/blue/red and 0.5mm(0.02in) lead to choose If you want to use black, just make the black words press the clip towards you, and the writing will be black, the same way for other colors. 2:How to replace 0.5mm(0.02in) pencil lead ? In the same way as other ordinary mechanical pencils, press and hold the clip and do not let go, you can take out the pencil lead and replace it. 3:How to replace the ballpoint pen refill ? Open the pen holder, pull out the refill, and replace it with a new one. Note: 1.Please allow 1-2cm(0.39-0.79in) error due to manual measurement. pls make sure you do not mind before you bid. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you! 3.Thanks for your understanding. Have a nice day! Package Include: 1 x 4 in 1 Multi-Function Gravity Sensing Pen