Portable Vise, Duty Rating - Vises Standard Duty, Jaw Width - Vises 3 in, Max. Opening - Vises 2 1/2 in, Throat Depth - Vises 2 5/8 in, Deep Throat No, Base Type - Vises Clamp-On Stationary, Pipe Jaw Included Yes, Pipe Capacity - Vises 3/8 in, Reversible No, High-Visibility No, Swivel Angle - Vises 360 Degrees , Jaw Face - Vises Smooth, Quick-Acting No, Material -Vises Cast Iron, Jaw Type Fixed