Package Includes :
HQ 4" 4x4x3 Tri-Blade Propellers CCW Rotation (one pair)
HQ 4" 4x4x3 Tri-Blade Propellers CW Rotation (one pair)
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.
These props have an oversized center hub for extra strength that measures 13.5mm in diameter by 7mm 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.
Material: Nylon Glass Fiber
Hub ID Dia: 5MM/9.5MM
Hub OD Dia: 13.5MM
Hub thickness 7MM
Adapter Rings 3mm,4mm,5mm