The ARP ARN12-1-3 Stainless Steel 1/2-20 Thread 12 Point Flanged Nuts are high-performance auto parts manufactured by ARP in the United States. These nuts are designed for race vehicles and offer a polished stainless steel finish for durability and aesthetic appeal. With a 12-point flange design, these nuts provide a secure and reliable connection for engine components. Sold individually, these ARP nuts are a popular choice among automotive enthusiasts looking to enhance their engine and components for improved performance on the track or street.