The Strange S-Series Steel Spool is a precision-engineered part designed for 1957-1964 Oldsmobile and Pontiac models with a drop-out center. Built by Strange Engineering, this spool is crafted specifically for 35-spline axles, delivering enhanced strength and reliability. Ideal for high-performance racing applications, it replaces traditional differential components, locking both rear wheels together for superior traction. With its robust steel construction, the S-Series spool withstands extreme torque, making it perfect for Olds/Pontiac enthusiasts seeking durability and performance. Discover improved stability and consistency on the track with this top-grade spool.