Based on @Consti1606 work. Many have complained about having to scale up for his model, which is due to a very tight fit due to poor dimensional accuracy and lack of tolerances in some areas. The original model left permanant damage to my XT60 connector.

Therefore, I remixed his model to be dimensionally accurate to fit genuine “amass” xt60 conenctors. With my version, there is a very slight friction that shouldn't damage your connectors.

Note that I printed mine in ABS and it has tiny bit of shrinkage, so you might have to scale x-axis and y-axis down to around 99.8%-99.9% if you prefer a tighter fit.