Kraft Tool Cellulose Sponge (6-1/2in x 4-1/4in x 2-1/4in) Cellulose material holds its shape and stands up to repeated use without falling apart. Highly absorbent material is great for soaking up water and other liquids. This multi-purpose sponge is great for cleaning and many all around uses. Washes clean. Bright yellow color is easy to spot on the jobsite.