A full set of high strength steel main bearing studs with nuts and washers for two-bolt engines. Includes qty. 6 M12 studs and qty. 4 M10 studs. These are made from premium aerospace steel (17-4PH), and the body of the studs are undercut for proper stretch. ARP 12-point nuts and washers are included. Significantly more clamping force than stock torque-to-yield fasteners.