Cello Butterflow Classic Roller Pen Set | Pack of 4 Roller Pens | 2 Blue & 2 Black Ink Colour Pens + 2 Jumbo Refills | Smooth Writing Experience | For Students and Office Use | Best Pen for Exams

This pen is of good quality, easy to hold, and writes smoothly. The dark ink gives a shiny finish and is even darker than the V7. There’s no leakage.

Very smooth writing experience but it is not waterproof ink if don't care about it then go for it.

It has dark colour,vibrant,and very strong nib it is smoother than butter just glides on paper, simply amazingIt is not Water Resistant but it's ease of use is the best!Better Pen than Pilot V7!

Good pens with good, dark flow and smooth to write

Best for writing but quality of cap not good it’s easily brake

Good product, the quality, smoothness and performance is great. Thanks very much.

GoodShould work on grip

This pen. Feels like heaven built quality, ink, leakage, color of ink is top notch, and also it has way better water resistance compared to v7, and it's value for money asthe ink is very big and last very but I liked if it has 3 blue pen and one clack my 2 black and refill is new and it has outstanding grip and the color of pen body looks so good. EVEN MY SST WHEN MY SST TEACHER BORROWED IT SHE SAID IT HAS VERY GOOD INK FLOW AND TIP IS VERY GOOD.I generally don't write big review but this thing deserves it and it way more cost effective than cheap 10 or 5 rupee pen JUST BLINDLY GO FOR IT