From the manufacturer:
For precise and mess-free applications of dye or pigment inks, paint, alcohol inks and other craft mediums. Ergonomic solid wood handle and blending foam create a smooth transition when applying mediums to papers, tags, chipboard, die-cuts, canvas and more. Foam can be replaced easily with EZ-change hook and loop fasteners. This package contains Ranger Ink Blending Tool with 2 Blending Foams. Made in the USA.
These 1.75x1.25 inch foam squares are refills for use with the Inkssentials Blending Tool (not included) for mess free blending, easy change from one to another and convenient use. This package contains Ranger Inkssentials Ink Blending Foam Refills, ten pre-cut foam squares. Made in USA.