Applicable Model: The front sprocket is designed for Chinese 200cc engines and serves as a replacement for the Coleman CT200U mini bike. Please verify compatibility with your model before purchasing to avoid returns. Premium Material: Constructed from high-strength steel alloy, this chain sprocket resists wear, tear, and rust while delivering reliable performance. Hole Diameter: Features a 16mm bore, ensuring compatibility with various mini bike models, making it a versatile choice for mini bike assemblies. Enhanced Performance: The 10T front sprocket improves bike performance by optimizing chain efficiency, providing smoother rides and consistent power transmission. Easy Installation: Designed for straightforward installation, this front chain sprocket is a convenient and durable replacement option, helping minimize bike downtime. Item Type: Front Sprocket Teeth: 10T (Compatible with 420 chain only) Hole Diameter: Approx. 16mm / 0.6in Application: Suitable for Chinese 200cc engines, specifically as a replacement for Coleman CT200U mini bikes. May fit other applications as well. Package Includes: 1 x 16mm 420 10T Front Sprocket, 1 x Key