The document discusses different types of clamps and vises used to securely hold work pieces for operations like grinding, bending, fitting, cutting, and machining. It describes bench clamps, C-clamps, drill vises, machinist vises, handvise V blocks with clamps, vise grips, tongs, and different types of pliers used for holding, cutting, and twisting wires. These tools securely grip work pieces for tasks like forging, machining, and other metalworking activities.