Arp Supercharger Stud - Break-Away - 7/16 in Diameter - 2.880 in Long - 12 Point Nuts - Aluminum - Blue Anodized - Set of 8-100-0601--Notes: 2.880 OAL 2.195 ABOVE LOWER SHOULDER Blue in Color State Restrictions- Canada Restriction-NO -Emission Warnings--NO Truck Freight ---NO