This Erasable Pen Set from Brother is designed for use with a pen holder in a CM100DM, CM250, or CM550DX ScanNCut machine. The CM250 and CM550DX include the pen set, so this is a replacement for those machines, and an optional accessory for the CM100DM.
The pens are ideal for drawing seam allowances, or other temporary fabric markings. The blue pen can be erased with water, and the purple pen's ink will disappear after 2-14 days.
Genuine Brother Sewing ScanNCut Erasable Pens