This is the For Bambu Lab TPU feeding assist module, an enhancement component specifically designed for flexible filament (TPU). It's used in For Bambu Lab X2D, P2S, P1S, P1P, X1, X1C, H2D, H2S, and H2C machines. Through active feeding and closed-loop control technology, it effectively solves problems such as feeding jams, material breaks, and uneven extrusion caused by the high elasticity and high friction of TPU, significantly improving printing success rate and surface quality.