New. Still factory sealed. For Kingkong/LDARC tiny R7 7/7X inductrix FPV + RC Drone quadcopter. Includes 10 pairs, which equals 20 pieces. Made of ABS. Center hole: 1mm. Hub thickness 9.8mm. Prop diameter: 40mm. Includes 4 blue propellers, 4 white, 4 red, 4 pink, and 4 yellow.