Try Uni-Ball Jetstream 4 in 1 Ball Pen & Mechanical Pencil instead of this worst tombow Japan's worst creation pen wasted my money. it's just a normal pen and belive me if you try to wite it in upside down potion it will write only 4 to 7 alphabets and then won't write anything. It will stop writing then again you need to come back to normal potion how we write. Don't go for this go for some other pen. scoobo has no sense why they sell such high priced waste material pen on their website.