Designed for lifting plate material in a vertical position. Not designed for use on stainless steel or aluminum plates. For use with materials with a surface hardness to 30 RC 300 HB. Bale Opening in. 5 1/4, 6600 Lb Capacity Load, Product Style Vertical, 3" Throat depth, 13/16" Plate Thickness. Designed for lifting plate material in a vertical position Lifting eye includes chain for greater versatility Heavy-duty steel construction for years of reliable use Meets ASME B30.20 specifications Do not use plate clamps to lift loads less than 20 of rated capacity. Lift only one plate at a time. Plate must be clean and free of oil.