powerday4Pairs 10x4.7" 1047 Nylon CW CCW Propeller for Multicopter Quadcopter Black&White -Diameter: 10 "(25.4 cm) -Slope: 4.7 "(11.93 cm) -Washer diameter: 3/3.5/4/ 4.8 /5/6/ 6.35mm -Material: Nylon Package Includes: 4pcs x 10x4.7 CW Propeller (2 Black & 2 White) 4pcs x 10x4.7 CCW Propeller (2 Black & 2 White)