Arp Supercharger Stud - Break-Away - 7/16 in Diameter - 2.500 in Long - 12 Point Nuts - Aluminum - Red Anodized - SSI Blower - Set of 8-100-0602--Notes: 2.500 OAL 1.585 ABOVE LOWER SHOULDER Red In Color State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO