From Ranger's Inkssentials line - Ink Blending Foam.
One package of ten (10) replacement foam units - for use with the Ink Blending Tool. For use in applying all types of stamping ink, paint and more for mess-free application.
Loop side of velcro is attached to each foam piece, cut to the size of the Ranger Ink Blending Tool (sold separately) base. Foam stays securely in place on tool despite repetitive and excessive use.