uxcell&reg; Vane Prop for MJX T40C T640C T55 T23 RC Helicopter Set Black Country of Manufacture: CHINA; Brand: Assisi Material: Plastic; Net Weight: 64g Package Content: 4pcs(1Set) x Main Rotor; Main Color: Black, Red Product Name: Main Rotor; Dimensions(approx): 24 x 4.4 x 0.7cm/9.4" x 1.7" x 0.27"(L*W*H) Hole Size: 6.4mm/0.25"