Designed myself in fusion 360 using the gridfinity system to organize my tap handles in my toolbox.  These are generic tap handles.  I always make the most use and use the least amount of filament possible on every model.  I added these extra trays for that reason.  letters are extruded so you can pause to change colors if you do not have ams.  Max fit dimensions are BIG: 5 1/8 inches long handle and body length 3 5/8 inches, Medium: 3 ¾ handle and 3 1/8 long body, small: 3 3/8 handle and 2 3/8 long body.  Max chuck diameters are BIG: 1 1/8 inches wide, Medium: ¾ wide and small 5/8 wide.  For metric, convert fractions to decimals them multiply by .03937.  Printed in sunlu black petg and red petg for letters, on QIDI PLUS 4.  Please like and upload your model for the community to see.