All HQ Props come packaged with two props per bag and one set of adapter rings.
HQ Props have become extremely popular for use in multirotors, especially in the smaller 250mm to 300mm FPV Racing Quads. These props are available in a wide variety of sizes, colors and materials to allow you to get the best match for your multirotor aircraft. All of HQ Props are available in both normal and reverse rotation as needed for use in multirotors. The standard props are made with a glass fiber fill for extra strength and durability, and come in Black, Green and Orange colors. The Carbon Composition props feature a carbon fiber fill for extra stiffness, and are only available in black.
These props have an oversized center hub for extra strength that measures 12.9mm in diameter by 7.1mm thick. The hub has a slightly undersize 5mm hole molded into the front of the hub, and a 9.5mm diameter recess in the back of the hub to accept prop shaft adapter rings. Also included with the prop is a set of adapter rings which fit into the recess on the back of the prop hub to reduce the center hole to 3, 4 or 5 millimeters. Before installing the prop, the molded center hole should be slightly enlarged with either a 5.0mm, #8 or 13/64" drill bit for clearance. If you have a larger threaded shaft on your prop adapter, the center hole can be also be reamed out to 6mm or 1/4 inch as needed.
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