Use for T-REX 500/600/600 Nitro。
Steel ball parts is made of rigid stainless steel, features wear-resisting, and anti-oxidization. Therefore this refitting component is absolutely helpful for the accuracy of flying movement control and the stable of the flight.
Linkage ball A(M2x3.5) x 9(Φ4.75x8.18mm)
M2 nut x 9