These pens are perfect for drawing seam allowances or creating other temporary markings on your fabric! The ink in the blue pen can be erased by water while the ink in the purple pen is design to disappear within 2-14 days of application. For use with ScanNCut Pen Holder (not included).
Specifications

The Brother Scan N Cut Erasable Pen Set CAPEN2 is for use on fabric. The ink contained in the Brother Scan N Cut Erasable Pen Set CAPEN2 can be erased by water, and the ink in the purple pen is designed to disappear within 2-14 days of application. The Brother Scan N Cut Erasable Pen Set CAPEN2 is designed for use with the ScanNCut Pen Holder (not included).

Project Ideas and Instructions for Brother ScanNCut (.PDF)
Kenneth E, Lehman PA
Very pleased with your service everything shipped quickly and arrived in good condition