Nowadays people always use the wrong gesture method to writing, it will hurt our hand.
Correct gesture Pen to helps you hold the pen in correct method.
For Replacement ink, you must put the ink until hear "ka" Sound, and let the pen straight up until pen ink flow out.
1 x Correct Gesture Pen with Blue Ink
1 x Replacement Red Ink
1 x Replacement Black Ink
1 x Erasable Blue Ink