This is the APC Propellers Sport Propeller Features: Made of durable materials 11 X 5

APC propellers computer-optimized design gives these props a thinner profile and more bite with less noise. Lightweight molded nylon construction reduces rotating mass for higher output and longer life.

This is an APC Propellers 9 x 6 Sport Propeller. Specs: Material: Plastic Number of Blades: 2 Blade Propeller Size: 9 x 6

This is an APC 12x6 Thin Electric Pusher Propeller. This prop is not for gas use. Specifications: Hub Diameter: 0.80 in. Hub Thickness: 0.45 in. Shaft Diameter: 1/4 in. Product Weight: 0.99 oz.

APC propeller blades that assemble onto a propeller hub. Comes with five adapter rings that adapt to different motor shafts. Comes in a bag attached to a header card. Specs: Diameter: 11" Pitch: 8 Hub inner diameter: 0.25

This is an APC 13x6 Sport Propeller. Specifications: Hub Diameter: 1.00 in. Hub Thickness: 0.46 in. Shaft Diameter: 1/4 in. Product Weight: 1.69 oz. Color: GREY