Designed for smaller rotary shouldered connections in oil and gas industry, 11069 Series Internal Thread (BOX) Bar-Style Tool increases fatigue resistance of connections without slowing process. Design of 11069-SA Series will roll all standard API Rotary Shouldered BOX connections in NC31–NC38, 3 ½–4 ½ regular, 2 7/8–3 ½ IF (Internal Flush), and 3 ½–4 ½ FH (Full Hole) ranges. Cold root rolling burnishes thread root in rotary shouldered connections and consequently strengthens them.