Check the listing for details. ARP 100-1414 Header Stud Kit - 6pt. 3/8 x 1.670 OAL (16). Condition: New. Listed at 80.99 USD. ARP 100-1414 Header Stud Kit - 6pt. 3/8 x 1.670 OAL (16). Weight : 1.16 lbs.