Moziur microblading threaded eyebrow design marking pen is used in microblading permanent make-up applications. 5 different color options Black / black Gray / gray Brown / brown Dark brown / dark coffee Light brown / light brown - First, put your pencil in a cooler such as a refrigerator and wait for it to harden. Then place the pen into the slot of the mold. Use a knife to weaken one side of the pen tip. Then- turn the pen and place it so that the other side of the nib slides into another slot of the die. You can use a thin knife to sharpen the tip of the pencil.