The CH-70720, CH-71220 and the CH-72420 Series, manufactured by Clamptek®, is a series of heavy-duty weldable toggle clamps, which features a manual clamping technology. These models are equipped with toggle clamps as well as metal clamps that are capable of holding materials tightly. In addition, their holding capacity is 6860N for the CH-70720, 11760N for the CH-71220 whereas a holding capacity of 23520N for CH-72420.