Angle Clamp Miter Capacity 3 1/2 in Jaw Width 4 in Jaw Height 1 3/8 in Throat Depth 7 in Jaw Material Cast Iron Spindle Material Copper Clamping Capacity 7 in Application Welding Clamping Angle - Maximum 90 Degrees Features Automatic Adjustment to Work Pieces of Different Thicknesses Service Spindle Assembly (Item# 3100953) Self-Centering Yes