The ARP 611-1500 S/S Bolt Kit is a high-performance auto part manufactured by ARP, a well-known brand in the automotive racing industry. Made in the United States, this bolt kit includes 5 1/4-20 x 1.500 bolts with a 12-point design for secure and reliable fastening. Specifically designed for performance and racing applications, these studs provide enhanced strength and durability to improve engine performance and components. Perfect for car enthusiasts looking to upgrade their engine fasteners with quality and precision-made products.