I bought a Deburring tool from Home Depot, and the available Gridfinity Deburring Tool holders did not fit mine. This is a 1x1 and the hole is 17.5mm x 17.5mm
Acknowledgements:
Gridfinity was created by Zach Freedman for more information: https://gridfinity.xyz/
TrackZero
This is was created in Tinkercad using Gridfinity Blanks provided by TrackZero here is a link to their models that made this possible https://www.tinkercad.com/things/0e6jUnl4tIr-gridfinity-blanks