Flybar Seesaw Holder H50026Instruction:Use for T-REX 500.Specification:Flybar seesaw holder x 1Bearing MR83ZZ x 2(Φ3x8x3mm)Bearing MR74ZZ x 2(Φ4xΦ7x2.5mm)M3 collar screw x 2(M3x9.6mm)