The brand new 5x4.5 from HQ. This prop is expected to exceed the 6x3 most measures. Keep in mind the 5" will be less efficient. This prop is for those trying to squeeze that absolute maximum out of a frame that can only acommodate 5" props.This is a pack of two HQ Props 5x4.5 Bullnose Propellers. Instead of being made from a flexible plastic material like most props, HQ (High Quality) Props are made from a composite material that helps them remain stiff and retain their shape. Even under harsh loads or wind, HQ Props help increase performance, provide stable punch-out's and increased thrust when using the bullnose prop.Features:Made of composite material, not plasticExtremely stiff prop More stable during punch-out’s and in windAble to use higher P gain settingsBullnose props provide more thrustIncludes:(2) Bullnose Props(2) 3mm Adapters(2) 4mm Adapters(2) 5mm Adapters