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This is a sky hero type landing gear for the 3DR IRIS. Get longer flight times du to the reduced weight of the landing gear. get rid of the way to heavy stock landing gear and replace it with this way lighter sky hero type landing gear
Required parts not included
You will also need some 16mm carbon fibre tube and you will need the Tube Adapter 2x (https://www.shapeways.com/model/2188231/tube-adapter.html?li=aeTabs)
Stock landing gear is 136g
sky hero type landing gear is 85-100g depends on configuration