Jaymo Replacement for Cross Selectip 8521 - Measures 4.375 in 111 mm Long - Gel Rolling Ball Pen Refill - 2 Blue

The Jaymo Replacement for Cross Selectip 8523 is advertised as a refill for Cross pens, but some customers found that it does not fit properly. There were also complaints about ink flow issues, with some users stating that the ink does not write well and comes and goes inconsistently. One customer mentioned that the product does not function like the original Cross gel refill and does not work like a gel pen should. However, there were a few positive reviews from customers who found the refill to be a good alternative to the original Cross refills, praising its affordability and quality.