Pixnor Universal Tall Landing Gear Skids for DJI F450 F550 FPV Aerial Photo The item is a set of 4pcs professional and practical landing gears, which are mainly made of durable hard plastic material, and can be easy to install on your DJI F450 F550 SK480 quadcopter or similar frame for aerial photography. 4 pieces of the universal tall landing gears in one set will be sold together. Material: durable hard plastic. Height: about 150mm. Those tall landing gears, for easy to install on your DJI F450 F550 SK480 or similar frame. Come with some M2.5*8 screws for assembling.