Compatible with Bambu-Lab PTFE Tube 2.5mm ID×4mm OD, Length 5M/ 16.4ft, for BBL AMS X1/ X1C/ P1P/ P1S/ A1/ A1 Mini, Prusa MMU3/ Direct Drive Extruder (Cream Color), with Tubing Cutter

It is a wear item, and you need a bunch of odd lengths, and if you have an ams riser or slider for the ams you might need a longer piece to get it to work, so now I just buy it in 5m sections from amazon it is cheap and almost always have over night shipping. https://www.amazon.com/dp/B0D4RBVD3D