Businesses in the machine tools category supply equipment used to shape, cut, drill, grind or form materials, particularly metals, in manufacturing and engineering. Products commonly include manual and computer numerical control (CNC) lathes, milling machines, machining centres, drills, grinders, saws, presses and sheet-metal working machinery. Suppliers may offer new or used equipment, along with cutting tools, work-holding devices, measuring instruments, spare parts and other accessories. Services can include helping customers select machinery for particular production tasks, delivery, installation, commissioning and operator instruction. Some businesses also provide servicing, repairs, refurbishment and replacement parts, or support for machine control systems and CNC programming. Customers range from small workshops to larger production facilities, and the equipment supplied may be suited to one-off work, tooling and prototyping, or repeat manufacturing.