Based On 1 reviews.
I have ordered several colors, and most were pretty good. Orange, which I would like to use for highlighting things is an exception. Over time I have ordered at least ten of these refills, and estimate only about a quarter of them worked to any extent; and at that I would have to 'fiddle' with them before they would write.
Thanks for the review. Keep in mind, these mini ballpoints have a wax ball on the tip which needs to be completely removed before writing.