<p><b>❤How to use the pen?</b><br> Twist/ rotate the pen tip part. The pen point will reach out and be fixed.<br> The pen tip will not retreat or sink back into the pen shell during writing.<br> When you finish writing, just rotate it towards another direction.<br> The pen tip will be unlocked and retract into the pen shell.</p> <p><b>❤Are they attractive and cutest?</b><br> There is a big sparkling diamond attached on top of the colorful metal ballpoint pen.<br> The unique design and exquisite workmanship make your diamond pens look beautiful, cute, glitter, bling-bling, gorgeous and attractive!</p> <p><b>❤Are they ballpoint pens or gel pens?</b><br> They are ballpoint pens in black ink.</p> <p><b>❤Will the diamond pens run out of ink quickly after a few uses?</b><br> All our cartridges are filled up with ink, which supports long-term use.<br> They will not run out of ink easily.</p> <p><b>❤What is the size of the ballpoint? Are they medium point or fine point?</b><br> The size of the ballpoint is 0.7mm.<br> Our diamond pens are medium point.</p> <p><b>❤Can the diamond pens be refilled?</b><br> Yes. Our diamond pens are equipped with international standard black color ink, which can be refilled easily.<br> You can also change any other colors of ink.<br> The pens should be refilled with specific cartridge model.</p> <p><b>❤How to replace the ink cartridge?</b><br> Just 3 steps.<br> 1.Pull apart the pen shaft from the middle;<br> 2.Unscrew the grooved black end of the ink cartridge;<br> 3.Screw a refill in.</p> <p><b>❤Will the paint peel off after long-term use?</b><br> No. By virtue of excellent painting technique, our diamond pens will still shine like the first day even they have been used for a long period of time.</p> <p><b>❤Do these diamond pens write smoothly?</b><br> Of course.<br> Our diamond pens write smoothly, provide define lines, reduce skipping and do not leave blobs or globs on your writing.</p>