This one uses the original Bambu Lab spindle, which just slots it. 
 
The design features a slight gap between the bracket and the side of the printer to relieve any rubbing or marking on the side panel.
 
There is an alternative spindle, which screws in. I needed this as I have some Sainsmart TPU and the reel has a stupidly tiny hole in the centre that doesn't fit any spool holder. 
 
The main bracket attaches to the print using 3 pcs of M3 x 15mm with M3 washers.
 
It will require some PTFE tubing. There is a Nozzle Guide for this or you could use a PC4-M10 connector, but I havn't tested this.
 
There is also a simple PTEF tube coupler if you just want to add an extra piece of tubing.