This lifting clamp is designed specifically for stainless steel plates and structures. Plate surface must have a max hardness level of HRC 30. The body and lock lever are nickel plates to prevent corrosion and this series comes with an articulated lifting shackle for universal lifting flexibility at various angles. Jaw opening is 0 to 0.79" and working load limit is 2 ton. Minimum working load limit is 10% of the max WLL.