Manual toggle and hold-down clamps secure and position parts, workpieces, and materials for fastening, assembly, metal fabrication, woodworking, and other processes. Hold-down toggle clamps press their clamping head against flat workpieces to secure them to work surfaces. Straight-line toggle clamps apply clamping force from the side rather than the top to position and hold workpieces. Latch-action toggle clamps pull one workpiece or object against another to hold or lock them together. Plier toggle clamps combine the grip of pliers and the pressure of clamps to hold or squeeze together parts and materials. Bench-mount hold-down clamps attach to a worktable, fixture, or workpiece to assist with aligning and leveling plates, sheets, and other flat materials.