This Redcat Center Diff Drive Cups81017 is designed for use with Redcat Racing cars, trucks, and motorcycles. It is compatible with a range of fuel types including electric, nitro, and glow fuel, and is suitable for use with 1:10 scale models. The cups are made from high-quality materials to ensure durability and reliable performance. They are easy to install and provide excellent traction to help you get the most out of your RC vehicles. Whether you're a seasoned RC enthusiast or just starting out, this Redcat Center Diff Drive Cups81017 is a great addition to your collection.