This is a replacement Align Plastic I-shaped Arm ...
Set, intended for use with the T-Rex 300X Electric Helicopter. Includes: (1) 470 Plastic I-shaped Arm (1) 470 Plastic Mount Link (1) 300 Linkage Ball C (3.5x5.8mm) (4) Bearing F681XZZ (1.5x?4x?5x2mm) (2) ...