This set includes 4 gel pens, each representing a Hogwarts house - Gryffindor, Hufflepuff, Ravenclaw, and Slytherin. They come with blue, yellow, green, and red ink respectively. Each pen is approximately 15cm long, perfect for fans to express their house pride while writing.

Using these Harry Potter gel pens is easy. Just remove the cap and start writing. These pens work well on most types of paper. When you're done, put the cap back on to prevent the ink from drying out. Keep them away from extreme heat or cold as it might affect the ink flow. To make them last longer, store them in a cool and dry place. If the pen doesn't write smoothly, try pressing the tip gently on a piece of scrap paper to get the ink flowing again.