About this product New ducted cinewhoop propellers from Gemfan. These 3-blade props come in a t-mount mounting type 63mm diameter 3 pitch and only weigh 1.4g each. They perform particularly well on CineWhoops with ducts. Choose a color! (Clear Gray Fluorescent Green Pink Purple Black) Specifications - Material: PC - Diameter: 63mm - Pitch: 3 in - Inner shaft diameter: 1.5mm - Hub Thickness: 4.9 mm - Weight: 1.4g each - Mounting Type: T-Mount Includes - 2 x CW Gemfan D63 Ducted Durable 3-Blade 63mm CineWhoop Propeller - 2 x CCW Gemfan D63 Ducted Durable 3-Blade 63mm CineWhoop Propeller