This is a Hobby People Prop Adapter & Mounting Set for the Hobby People 4120 Brushless Outrunner Motor. Features 3mm thick aluminum radial motor mounting plate, threaded propeller adapter, washer and flanged propeller nut.

When you install one of these glass filled engine mounts, your model will be lighter and your engine will have a much better chance of surviving in the case of a mishap. You see, these mounts are designed to take the shock of a severe crash or mishap and break away, protecting your engine. A metal engine mount is just as strong or stronger than the engine so the engine runs a much higher chance of breaking.

With their adjustable beams, the three sizes of mounts will fit exactly on any .25-1.20 cubic inch, 2- or 4-stroke engine you use. Landing gear holes are predrilled in two axes, allowing you to mount your engine upright, inverted, left or right.