Uni-Stud Heavyweight Welding Studs 2.6 mm heavy duty stud complements the most popular”1002” stud sold on the market . Specially designed for high strength alloy steel heavy hit areas. Ideal for rockers, rails and door posts. 500 lb. fusion strength with 2000 lb. tensile strength. New tip design provides instant weld puddle and easy weld flow. Less trigger time with the stud welder resulting in less heat transfer. Special 5 process alloy steel for super flexibility. Designed for all Uni-Spotter stud welders 1102