The Tajima Replacement Sponge Raku Tsubo B is a Japanese replacement sponge designed for the Tajima Raku Tsubo B chalk line. Made of urethane, it provides good absorption and even distribution of sumi ink to maintain clean and precise lines.

This official Tajima maintenance part helps preserve the optimal performance of the chalk line while extending its lifespan. Its simple replacement allows for smooth marking even after intensive use on construction sites.