This 42/34/24 Crankset comes with 3 chainrings and 165mm Crankarms. The black steel material is durable and suitable for mountain bikes. The set includes a chainring for each crankset and is perfect for those looking to upgrade their bicycle components. The item's width measures 165mm and is compatible with most bikes. The product is manufactured in an unknown country/region. With this crankset, you can enhance your bike's performance and enjoy a smooth ride.