Use for T-REX 250
*Metal tail rotor control arm(12.2x8.3x6.3mm) x 1
*Collar x 1(1.5x2.5x5mm)
*Washer x 1(1.5x3x0.5mm)
*Socket button head screw x 1(0#x8mm)
*Linkage ball A(0#x2) x 1(3.5x5.3mm)