Titanium Quick Pin Thru Bolt Stud Kit. Kit contains 8ea ALWASH500750 Alum spacers, 8ea COTTERRUE500 q-pins, 6ea ST364-820G5 steel shear nuts, 2ea TD511-213 studs, 2ea TD511-275 Studs, 2ea TD511-375 studs and 2ea TD513 Studs. Studs are heat treated to a Min. UTS 160 Ksi. and have hot forged hexs and rolled threads.