Pony jorgensen, 24", steel bar clamp, medium duty, for crafting, cabinet making, woodworking & metalworking, sliding head design threaded to accommodate screw, all adjustments made in the moveable sliding head, suitable for close quarters use, bars are strong, lightweight & rust resistant, multiple disc clutch holds securely at any point along the bar, 2-1/2" throat depth, 1" jaw width, 24" maximum opening, 1/4" x 3/4" plated bar, 600 lb clamping strength.