The HUB W SERIES 1-3/8" X 21 SPLINE BORE from Double HH Manufacturing is engineered for high-performance applications requiring precise fit and durability. This hub features a 1-3/8 inch diameter with a 21 spline bore, making it compatible with various machinery and equipment. Constructed from high-strength materials, it ensures reliable operation under heavy loads. Ideal for agricultural and industrial applications, this hub meets industry standards for quality and performance, providing a secure connection for your drive systems.