Without configuration: without connecting the PTFE hose directly from the tool head to the OUT connector of the adapter, while feeding the filaments through the IN connectors to get the possibility of printing with two materials USER FRIENDLY IMPROVEMENT Our upgraded removable black solves the conventional difficulties of removing PTFE tubing with its ergonomic design for effortless maintenance and parts replacement Upgraded Detachable Design The 2 in 1 PTFE connector features a screw-proof design for easy disassembly and cleaning during filament jams or maintenance work and exceeds standard PTFE connectors Instructions for use: connect the PTFE hose from the tool head to the OUT connector of the adapter when using and insert up to 2 filaments into each IN connection hole to ensure smooth filament supply without penetrating bends Compatible 3D printer: this PTFE adapter has been developed for laboratory and other 3D printers and serves as an efficient replacement part, Manufacturer: OSNIYAW