i have been a 'zen-tangler' for many years...i do not know what 'tool' you could possibly be referring to...all it takes to zentangle is a pencil, a micron pigma pen and a piece of high quality cotton paper...the people who go through the zentangle.com web site and purchase supplies use 3 1/2" square tiles of cotton paper. but that is all that is needed. a piece of paper, a pencil and a pen...