There are some photos here. The pack I got from Mechatron had:
- Spindle
- Spindle power cable
- VFD
- AC line filter
- Brake resistor
- Water cooling loop
- Pump
- Tubing
- Fittings
- Radiator
- AC fans
- A bottle of coolant
It’s not that it’s bad, it was just scary for me, it was my first time dealing with mains voltage electricity and I could handle it for the VFD, where it was basically unavoidable, but I didn’t want to touch it for some measly fans.
I used everything they sent me, except for the fans.
That said, you absolutely could build a loop yourself.