RC plane enthusiasts, these MECCANIXITY sponge wheels are perfect for keeping your models rolling smoothly! You get 6 wheels in the pack, each measuring 1.77 inches in outside diameter with a 0.59 inch thickness. The axle hole is 2.1mm, which fits most standard RC aircraft landing gear. The PU sponge material is lightweight and flexible, which is exactly what you want for model planes - less weight means better flight performance and easier takeoffs/landings. The plastic hubs are durable but not heavy, and the sponge tires provide just enough cushioning for smooth ground operations. They come in black and white colors, so you can mix and match or use whatever fits your plane's look. Installation is super simple - just slide them onto your axle and secure with the appropriate hardware. These work great for indoor flyers, park models, DIY RC projects, and even some light RC car applications. The sponge material absorbs vibrations and provides good grip on various surfaces. Whether you're replacing worn-out wheels on an existing model or building a new plane from scratch, having reliable wheels makes a big difference in how your aircraft handles on the ground. The pack of 6 gives you spares for future projects or replacements. For the price, the quality is really good - they're well-made and consistent in size. If you want wheels that are light, durable, and perform well, these sponge wheels are definitely worth trying!