This is the APC Propeller 10x4.5 Multi Rotor. Tech Specs:Hub Diameter: 0.65 in.Hub Thickness: 0.35 in.Shaft Diameter: 1/4 in.Product Weight: 0.53 oz.Includes:BladeRequires: Adapter Rings

• APC Propellers 10x4.5 Multi Rotor Self Tightening APCLP10045MRST

APC Propellers 10x4.5 Multi Rotor Self Tightening APCLP10045MRSTAPC Propellers