This is a pack of two HQ Props 4x4x3 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