This product is an original GM rear half shaft driveshaft designed for 1963-1974 Corvettes. It is 2.5" in diameter and does not have a flange on it. This driveshaft is a genuine replacement part manufactured by General Motors specifically for the rear placement on these specific vehicle models. Perfect for maintaining the authenticity and performance of a classic Corvette, this high-quality drive shaft is a reliable choice for restoring or customizing your vehicle. VERY GOOD CONDITION WITH NO PITS. ONE UNIVERSAL JOINT IS ORIGINAL WITH GM PART NUMBER. GOOD ONE TO RESTORE. #6248MATT