The H&S Autoshot Uni-Stud Pulling Studs allow for a strong and easy weld process with low energy consumption, according to the company. The design allows for welding on all existing steels, as well as on the newer high-strength, lightweight steel common in the collision repair market. The pulling studs create instant weld puddle and easy weld flow, require little trigger time with the stud gun, resulting in less heat transfer, and they offer welds with less burn through and heat-related damage to the repair area, according to the company. The Uni-Stud Pulling Studs come in a 2.2mm Flex option, No. Uni-1101, and Heavyweight option, No. Uni-1102.