This PTC Lock Snap will fit the standard 4mm quick connect PTC fittings on the Rostock Max and Orion Delta printers ensuring that the fitting remains engaged onto the PTFE tube. The retention loop will attach to the PTFE tube to ensure that you don't loose the part when changing filament.

Tested with ABS and PCTPE

Attribution - Creative Commons

SeeMeCNC, RostockMax, Orion, Calibration, DeltaPrinter