See the original notes on the model “Prusa XL series: Nozzle Change tool / Hotend clip” by Surfalex2000 for more details on how to use this.
Remember to loosen the screw holding the nextruder nozzle assembly in place.
This remix should be compatible with heater blocks with installed silicone socks. (It also appears compatible with naked blocks, too.
The author remixed this model.
The original model was tightly designed around a sockless heater block. I modified the design of the clamp to have a little more space around the heater block. I also added a few chamfers to aid in installation.