Erase it! Gel pens Animal. The erasable Erase it! gel pens are ideal for school, university, or the office. With the plastic tips at the end of the barrel and cap, the writing can be easily rubbed away using generated friction heat. The line thickness is 0.7 mm. The Erase it! gel pens are refillable and available in blue and black colors. The Animal Erase it! is a real eye-catcher in any situation with its cute, various animal motifs.