Spindle Holder 43mm

This is an adapter for a spindle that i bought for my Stepcraft CNC machine.
The spindle is this: https://www.banggood.com/Machifit-ER11-Chuck-CNC-500W-Spindle-Motor-with-52mm-Clamps-and-Power-Supply-Speed-Governor-p-1027937.html?rmmds=myorder&cur_warehouse=CN

The fixing holes are 3mm and 25mm apart from each other and 35mm across.
The inner diameter is 26mm and the outer diameter is 43mm

This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/624tcTebts2