Rockwell Battery Angle Grinder clutch

by Thingiverse
Designed for the rockwell shop series battery angle grinder;
As sold by Supercheap auto of Australia.

In factory condition, they have a rubber "clutch" or coupler between the drive shaft and the gearbox.
I assume this is a protection system or anti-vibration feature.

Never the less, it looks like something that will need to be replaced.
To that end I created a replacement, designed to print with ABS.
If you wish to print with PLA, You will need to adjust the tolerances a little.

Autocad, and Inventor files are also included.
The coupler is 5.7mm thick,