The tires in the model airplane accessories are made of sponge material, which is lightweight and flexible, and the complete aluminum landing gear accessories are sturdier and provide a sporty look. These model airplane accessories are designed to perfectly fit RC airplane models, DIY RC models, indoor and park flyer models, etc. RC airplane landing gear wheels, have the size: Landing gear: Front wheel 46mm/1.8 inch, Rear wheel 105mm/4.1 inch. Wheel diameter: 17mm/0.7 inch, 0.6mm/0.02 inch. Color: Black. Material: Stainless steel, Plastic. Package includes: 1 x Front wheel with rods, 2 x Rear wheels with rods. Open the bag and pass the metal rod through the center of the tire and fasten the tire smoothly with screws. The long metal beam is used as the main support, and various tools are used to connect the metal rod and the metal frame. Note: Light shooting and different displays may cause the color of the item in the picture to be slightly different from the real thing. Before installation, read the instructions carefully or refer to relevant documents to ensure that the operation is performed correctly.