Genuine RHI&A C45-KR12B-1-Z033 sprocket, engineered for C45 series roller chains (equivalent to ANSI 40). This robust industrial sprocket features 12 precision-machined teeth, a 25mm bore diameter, and an 8mm x 3mm keyway for secure shaft mounting. Constructed from durable carbon steel, it ensures reliable power transmission in various industrial machinery applications. The B-type hub design provides stability and easy installation. With an outside diameter of 55mm and a face width of 7.2mm, this sprocket is a critical component for efficient power transfer systems.