4"

Specification: Inner diameter (Prop Mount): 5mm High quality material, it is flexible and durable, and can survive crashes Package Includes: 2 x CW props 2x CCW props 

Specification: Props Inner diameter  (Prop Mount): 5mm High quality material, it is flexible and durable, and can survive crashes   Package Includes: 2 x CW 2 x CCW

Model: X40403 Hi-Performance Prop FPV 3 blade bullnose propeller 4040 CW/CCW Material: Nylon + Fiber Size: 4 x 4 Hub inner diameter(ID): M5 Hub thickness: 7mm Weight: 3g Application: 150mm & UP Frames