Caliper Windback Tool - Parametric

Parametric version of the original tool I made.
Open the file in fusion, click "Modify", then "parameters".
Under "User Parameters" D1 is the piston diameter. I have it offset later in the design, so it will always make your tool diameter 5 mm wider than your piston.

Link to non parametric file, https://www.thingiverse.com/thing:5424270