Jaymo - 6 Black - Ballpoint Pen Refill - Replacement for Cross 8513-4.5 in 116 mm Long

This Jaymo black ballpoint pen refill is a replacement for the Cross 8513, measuring 4.57 inches or 116.15 mm in length. The product description should be updated to 4.6 inches. Jaymo only offers one size, which is a 1mm medium tip. There are various compatibility questions, and the manufacturer cannot confirm whether it will be compatible with other pen brands. Some users have mentioned that the refills do not last as long as genuine Cross refills, but this balanced out by the lower price point. Overall, Jaymo is a good alternative for those looking for a more affordable option than Cross branded refills.