*Essential welder"s tool for precision angle/corner welds; heavy-weight cast iron construction*One-piece dual-faced jaw clamps workpieces at 90-degree angle for corners or T-connections*Swivel pivot-point allows self-adjustment for pieces with varying thickness or shape*Copper-plated screw helps prevent welding slag and splatter build-up in threads*Use as stand-alone clamp or permanently mounted with pre-milled shoulder slotsMaximum jaw opening 4", jaw height 2-1/2", jaw width 5"; 8"L x 3/4"-diameter screw with removable 6" handle. Overall dimensions (see illustration): 10"W x 10"L x 4"H, 26 lbs net weight.