Cross Rollerball Pen Refills, 8521, 8523

Refills for Cross Rollerball Pens Genuine Cross Rollerball Pen Refills These refills will fit all Cross rollerball pens except the new Classic Century, Spire & Click pens. Please be sure to look at your current refill and match it to the picture and description to be sure these will fit your pen. #8523 and #8521 are the same refill, just different colors. All these refill will fit the same pens  Measurement:   4 1/2  inches (115mm) Colors:  Black & Blue Item#: Black - 8523 / Blue - 8521 Ink:  Gel Tip Size:  Medium