Based on this product's specifications, here are some alternatives and similar models
PTFE Bowden Tube for Flashforge Adventurer3 – model 50000701001
Summary description:
PTFE Bowden tube compatible with Flashforge Adventurer3, model 50000701001. This replacement Bowden liner is made from PTFE to provide low-friction filament feed for Bowden-style extruders. Intended for use with the Adventurer3 printer to ensure smoother filament movement, reduce jams and improve extrusion consistency during 3D printing.